A tow truck operator placed a strap on the Honda Accord in the sinkhole in the 4200 block of Edmonston Road on January 27, 2015 in Bladensburg, MD. The sinkhole was caused by a 12-inch water-main break early Tuesday morning which also flooded a number of homes in the area. (Photo by Mark Gail/The Washington Post)

Badria Kadim, left, a 44-year-old Iraqi woman and her daughter Zahra Allawi, 9, collect natural salt to sell on the market near Najaf, 100 miles (160 kilometers) south of Baghdad, Iraq, Tuesday, January 27, 2015. (Photo by Hadi Mizban/AP Photo)

Visitors stand in front of a giant, 360 degree panorama display that depicts the city of Dresden in the aftermath of the Allied firebombing during the press preview on January 23, 2015 in Dresden, Germany. On February 13, 1945, only months before the end of World War II, British and U.S. bombers obliterated the historic city center, killing at least 25,000 people. The panorama display is the work of Yadegar Asisi and will be open to the public beginning January 24. (Photo by Matthias Rietschel/Getty Images)

Guest enjoys MEOW-velous films and festivities at the third annual Fresh Step Catdance Film Festival on Saturday, January 24, 2015, in Park City, Utah. (Photo by Jack Dempsey/Invision for Fresh Step Litter/AP Images)

Socialist Popular Alliance Party (SPAP) activist Shaimaa al-Sabbagh receives help after she was shot during a protest by the party in Cairo January 24, 2015. (Photo by Reuters/Al Youm Al Saabi Newspaper)

An Egyptian is arrested by plainclothes police in downtown Cairo, Egypt, Sunday, January 25, 2015. Egypt tightened security in Cairo and other cities Sunday as police moved to break up scattered protests marking the anniversary of the 2011 uprising that toppled autocrat Hosni Mubarak. The protests came a day after a female protester was shot dead while participating in a peaceful protest in downtown Cairo. Egyptian security officials say at least a dozen people have been killed on Sunday. (Photo by Hassan Mohamed/AP Photo)

A parent of pupils at St. Catherine's primary school stand behind a Kenyan national flag as she and others march toward the office of the Ministry of Lands, Housing and Urban Development to protest against alleged land grabbing of the school's playground in Nairobi, Kenya, January 28, 2015. The protesters and activists accused the private development company of grabbing the school's land. “The rightful owner (of the land) is St Catherine's school. I will instruct my officers to enjoin the Ministry in the matter to ensure that the school secures its land”, the Lands Cabinet Secretary Charity Ngilu said after meeting with parents of pupils who are predominantly from the poor slum in the area. The demonstration came nine days after another protest against land grabbing at Langata Road primary school in Nairobi in which the police is being condemned and investigated for tear gassing pupils who participated in a protest. (Photo by Dai Kurokawa/EPA)

Belarusians play with their dog in a park after snowfall in Minsk, Belarus, 23 January 2015. 20 per cent of the monthly rate of precipitation fell in Minsk on 23 January. (Photo by Tatyana Zenkovich/EPA)

Michigan State guard Cara Miller, left, and Maryland center Brionna Jones struggle for possession of the ball during the first half of an NCAA college basketball game, Thursday, January 22, 2015, in College Park, Md. (Photo by Patrick Semansky/AP Photo)

A Thai devotee pays respect to a Buddhist monk as walks pass on petals during a pilgrimage rite procession in Bangkok, Thailand, January 29, 2015. All 1,130 Thai Buddhist monks take part in the 422.6 kilometer (262 miles) long pilgrimage through seven provinces to pay their homage to Lord Buddha and make merit for Thai Buddhist devotees. (Photo by Rungroj Yongrit/EPA)

Israeli border police officers stand guard during the memorial ceremony of former Israeli Prime Minister Ariel Sharon, on the 1st anniversary of his death at his grave site, in Havat Shikmim southern Israel, Thursday, January 29, 2015. (Photo by Oded Balilty/AP Photo)

A woman sleeps with her child at the platform during the country wide strike called by the Bangladesh Nationalist Party (BNP) at the Kamlapur railway station in Dhaka, Bangladesh, 26 January 2015. Violence erupted in different parts of the country after former prime minister Khaleda Zia called a nationwide transport blockade on 05 January, the first anniversary of a controversial election that her Bangladesh Nationalist Party (BNP) and allies boycotted. According to official estimates, at least 30 people have since been killed in firebomb attacks on passenger buses, cars and trucks as vehicles plied on highways in defiance of the blockade. (Photo by Abir Abdullah/EPA)

A graffiti of a dead fish is pictured in part of the Jaquari reservoir, during a drought in Vargem, Sao Paulo state January 28, 2015. Sao Paulo, Brazil's drought-hit megacity of 20 million, has about two months of guaranteed water supply remaining as it taps into the second of three emergency reserves, officials say. (Photo by Roosevelt Cassio/Reuters)

Lebanese shepherd Ali al-Ahmad collects the remains of mortar shells left over from a flare-up between Israel and Hezbollah along the the Lebanese Israeli border in the southern village of Wazzani, Lebanon, Thursday, January 29, 2015. U.N. peacekeepers were seen in southern Lebanon on Thursday, inspecting damage at the Spanish contingent's base in Abbasiyeh village, where the soldier was killed. (Photo by Mohammed Zaatari/AP Photo)

A Bighorn sheep walks across the 17th tee as Patrick Reed, left, and Francesco Molinari, right, look on during the final round of the Humana Challenge golf tournament on the Palmer Private course at PGA West on Sunday, January 25, 2015 in La Quinta, Calif. (Photo by Chris Carlson/AP Photo)

He Daxin, museologist of the Shaanxi History Museum oversees the unpacking of an ancient Chinese artwork, an original soldier statue of Emperor Qin Shi Huang's Terracotta Army, prior to the opening of the Chinese exhibition called “The Treasures of the Ancient China” in the Museum of Applied Arts in Budapest, Hungary, Thursday, January 29, 2015. The exhibition opens on Feb. 6, 2015. (Photo by Tamas Kovacs/AP Photo/MTI)

Pug dog Charlie is warmly dressed up with a coat and cashmere jumper during the St. Moritz Polo World Cup on Snow on the frozen lake in in St. Moritz, Switzerland, Friday, January 30, 2015. (Photo by Gian Ehrenzeller/AP Photo/Keystone)

Pittsburgh Penguins right wing Steve Downie (23) and Washington Capitals center Michael Latta (46) fight in the third period of an NHL hockey game, Wednesday, January 28, 2015, in Washington. The Capitals won 4-0. (Photo by Alex Brandon/AP Photo)

In this photo taken Saturday, January 24, 2015, a child makes a face while having her photo taken with the snow covered slopes of the Nanshan ski resort behind her in Beijing. As Beijing makes a final push in its bid for the 2022 Winter Olympics, Chinese President Xi Jinping says winning the bid will encourage over 300 million Chinese to take up winter sports by 2022, according to state-run Xinhua News agency. (Photo by Ng Han Guan/AP Photo)

Reporters take pictures of telephones used on the first transcontinental call, Thursday, January 22, 2015, at the California Historical Society in San Francisco. The phones will be displayed as part of the 100-year anniversary of the Panama-Pacific International Exposition. (Photo by Jeff Chiu/AP Photo)

In this Friday, January 16, 2015 photo, Iranian skier Zahra Jabbari stands prior to her descent from a slope at the Shemshak ski resort in the Alborz mountain range 36 miles (60 kilometers) northeast of the capital Tehran, Iran. With quite steep slopes at an altitude of 2550m to 3050m above sea level, lighting facilities for night skiing, and a normal ski season from late November to late April, Shemshak attracts many advanced Iranian and foreign skiers. (Photo by Vahid Salemi/AP Photo)

Lynn Leary walks past houses damaged by ocean waves during a winter storm in Marshfield, Mass., Tuesday, January 27, 2015. The storm punched out a section of the seawall in the coastal town of Marshfield, police said. (Photo by Michael Dwyer/AP Photo)

Elizabeth prepares a float for the Vila Isabel samba school in preparation for the upcoming carnival parade, in Rio de Janeiro, Brazil, Friday, January 30, 2015. Brazil's world famous festival begins February 13. (Photo by Silvia Izquierdo/AP Photo)

In this Saturday, January 17, 2015 photo, a tourist from Argentina takes a photograph with her tablet computer of a woman selling foraged greens, during a day trip in the northern city of Tripoli, Lebanon. “Foreigners!” residents called out to each other as the group of around 30 Lebanese and foreign tourists made their way through the Old City's labyrinth of cobblestone alleys, snapping pictures of centuries-old archways and graceful minarets. (Photo by Bilal Hussein/AP Photo)

Idina Menzel answers questions at a pregame news conference for NFL Super Bowl XLIX football game Thursday, January 29, 2015, in Phoenix. Menzel is scheduled to sing the national anthem. (Photo by Morry Gash/AP Photo)

Katy Perry shows off her dress at a halftime news conference for NFL Super Bowl XLIX football game Thursday, January 29, 2015, in Phoenix. (Photo by Morry Gash/AP Photo)

Jhene Aiko arrives at the Madden Bowl XXI Super Bowl Party on Thursday, January 29, 2015, in Scottsdale, Ariz. (Photo by Omar Vega/Invision/AP Photo)

Katy Perry chases after her dog Butters at a halftime news conference for NFL Super Bowl XLIX football game Thursday, January 29, 2015, in Phoenix. (Photo by Morry Gash/AP Photo)

A dancer waits to perform in a pre-feast presentation in honor of Our Lady of Candelaria's upcoming feast day celebrations, at the Ministry of Culture in Lima, Peru, Thursday, January 22, 2015. A 15-day festival takes place annually in the patron saint's honor in Puno, over 800 miles southeast of Lima. The cultural event, which begins Feb. 1, is recognized as one of the most popular and significant in South America. (Photo by Martin Mejia/AP Photo)

Street artist Ruben Acosta balances a knife on his tongue as he performs for tips in Lima, Peru, Monday, January 26, 2015. Acosta is known for juggling three machetes at a time as he stands between cars waiting at stoplights. (Photo by Martin Mejia/AP Photo)

Kurdish Peshmerga fighters surround extremists inside a hotel near police headquarters in the oil-rich city of Kirkuk, 290 kilometers (180 miles) north of Baghdad, Iraq, Friday, January 30, 2015. Kurdish troops and the city's security force have been trying to rout the IS group. Three gunmen subsequently took positions inside the hotel, located in the city center, triggering a firefight with the Kurds and the police. (Photo by AP Photo)

Danish-Icelandic artist Olafur Eliasson poses for photographs in front of his art installation “Big Bang Fountain” as he presents his exhibition “Olafur Eliasson Contact” held at the Vuitton Foundation, in Paris, France, 23 January 2015. The exhibition runs until 23 February. (Photo by Yoan Valat/EPA)

A man with a tattoo on his head showing the “Berlin Bear” and the dome of the television tower in Berlin, Germany, 28 Germany 2015. (Photo by Britta Pedersen/EPA)

An Indian villager looks from hole in the wall of a building allegedly damaged by shelling from the Pakistani side of the disputed Kashmir border, at Arnia village, about 45 KM from Jammu, the winter capital of Kashmir, India, 30 January 2015. According to local sources in a major ceasefire violation by Pakistani Rangers three civilians were wounded on the Indian side of the disputed India-Pakistan Kashmir border when Pakistani troops allegedly fired mortar shells at border posts and villages. (Photo by Jaipal Singh/EPA)

A float from the Indian state of Goa rolls down at Rajpath during the 66th Republic day function in New Delhi, India on 26 January 2015. President Obama is the first United States president to be guest of honour at India's annual Republic Day parade. (Photo by Harish Tyagi/EPA)

Weathernews casters Airi Yamagishi (L) and Akane Fujioka inspect pollen robots, observation equipment measuring pollen load ahead of the start of the hay-fever season at headquarters of Japan's weather information service company Weathernews at Makuhari in Chiba, east of Tokyo, Japan, 28 January 2015. Many people suffer from hay fever from early next month as the people are allergic to pollen. (Photo by Kimimasa Mayama/EPA)

Visitors walk through an ice castle at Stratton Mountain in Stratton, Vermont, USA, 22 January 2015. The ice sculpture is built by hand by harvesting icicles and spraying water in the sub-freezing conditions. (Photo by C. J. Gunther/EPA)

Kashmiri Muslim villagers carry the body of Abid Ahmed Khan, a suspected local militant commander, during his funeral procession in Handora, some 40 kilometers (25 miles) south of Srinagar, India, Wednesday, January 28, 2015. A brief gun battle between Indian government forces and suspected rebels on Tuesday killed two rebels and two troops in the disputed Kashmir region, police said. (Photo by Mukhtar Khan/AP Photo)

Heidi Klum attends David Jones launch of her Intimates Collection at David Jones Elizabeth Street Store on January 28, 2015 in Sydney, Australia. (Photo by Brendon Thorne/Getty Images)

Amal Clooney, a member of a legal team representing Armenia, enjoys a coffee during a break at the European Court of Human rights in Strasbourg, eastern France, Wednesday, January 28, 2015. Amal Clooney, the wife of George Clooney, is among the lawyers arguing at the European Court of Human Rights against a Turkish man convicted in Switzerland for denying the 1915 Armenian genocide. Armenia, which argues that denying the genocide should be a crime as denying the Holocaust is in many European countries, is challenging a decision that ruled the man's right to free expression was violated. (Photo by Christian Lutz/AP Photo)

Visitors pass a heart made of red roses at the international trade fair for plants IPM in the city of Essen, Germany, Thursday, January 29, 2015. (Photo by Martin Meissner/AP Photo)

A floral artwork, showing the Little Prince from Antoine de Saint-Exupéry's book on his planet, is on display at the international trade fair for plants IPM in the city of Essen, Germany, Thursday,January 29, 2015. (Photo by Martin Meissner/AP Photo)

A girl plays with a curtain of water at Madureira park in Rio de Janeiro, Brazil, on January 25, 2014. (Photo by Yasuyoshi Chiba/AFP Photo)

Lee Westwood of England takes a ball out of a golf hole on the putting green during a practice round prior to the Omega Dubai Desert Classic at the Emirates Golf Club, January 27, 2015, in Dubai, United Arab Emirates. (Photo by Ross Kinnaird/Getty Images)

Rizalino Manas of The Philippines competes during the Pastries World Cup final on January 25, 2015 as part of the Catering and Food International Show (SIRHA) in Chassieu, outside Lyon. (Photo by Jean-Philippe Ksiazek/AFP Photo)

An employee demonstrates using the Smile Baby (Smiby) care robot, jointly developed by Togo Seisakusyo Corp. and Chukyo University, at Togo's headquarters in Togo Town, Aichi Prefecture, Japan, on Monday, January 26, 2015. The robot, aimed at an elderly market, went on sale on January 21 costing 68,000 yen ($777). (Photo by Bloomberg)

A child plays in Central Park as it snows in the Manhattan borough of New York January 26, 2015. Winter Storm Juno has brought blizzard warning for New York and much of the North East United States. (Photo by Carlo Allegri/Reuters)

Michelle Rodriguez attends the Versace show as part of Paris Fashion Week Haute Couture Spring/Summer 2015 on January 25, 2015 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)

Michelle Rodriguez attends the Versace show as part of Paris Fashion Week Haute Couture Spring/Summer 2015 on January 25, 2015 in Paris, France. (Photo by Pascal Le Segretain/Getty Images)