A tornado touches down northwest of Hutchinson, Kan., Monday, July 13, 2014. (Photo by Travis Morisse/The Hutchinson News via AP Photo)

Staff wearing masks during a work day at a property service company specializing in leased office space in Handan in northern China's Hebei province Tuesday, July 14, 2015. The company holds a monthly relaxation day at the office using various themes such as a “faceless” day when workers wear masks with the idea that they don't have to fake their facial expression through the day. (Photo by Chinatopix Via AP Photo)

Evie Gilder, 10, tickles a huge LEGO sculpture of a mallard with a bird's feather at Wildfowl and Wetlands Trust Slimbridge, England, Tuesday, July 14, 2015, where 10 individually designed LEGO brick animals are on display over the summer. (Photo by Ben Birchall/PA Wire via AP Photo)

A man performs a BMX bike stunt as the pack with Britain's Christopher Froome, wearing the overall leader's yellow jersey, passes during the tenth stage of the Tour de France cycling race over 167 kilometers (103.8 miles) with start in Tarbes and finish in La Pierre-Saint-Martin, France, Tuesday, July 14, 2015. (Photo by Laurent Cipriani/AP Photo)

A fan watches from the stands during the fifth inning of the MLB All-Star baseball game, Tuesday, July 14, 2015, in Cincinnati. (Photo by Jeff Roberson/AP Photo)

People hold up red kerchiefs as they sing a song “Pobre de Mi”, at the end of San Fermin Festival on the midnight, in Pamplona, northern Spain, Wednesday, July 15, 2015. (Photo by Alvaro Barrientos/AP Photo)

Workers work next to a pit after a truck and a police kiosk fell into a cave-in on a street in Dingyuan county, Anhui province, China, July 14, 2015. The area of the cave-in, which occurred on Monday morning, is around 100 square metres (1,076 square ft). Three people were injured in the incident, according to local media. (Photo by Reuters/Stringer)

Devotees crowd to attend the Maha Pushkaralu, a Hindu festival, on the banks of river Godavari at Rajahmundry in Andhra Pradesh, India, July 14, 2015. Twenty-seven people were killed and 40 injured on Tuesday in a stampede in the Indian state of Andhra Pradesh, police said, as crowds surged to bathe in the Godavari River on the first day of the religious festival held once every 144 years. (Photo by R. Narendra/Reuters)

Devotees crowd to attend the Maha Pushkaralu, a Hindu festival, on the banks of river Godavari at Rajahmundry in Andhra Pradesh, India, July 14, 2015. (Photo by R. Narendra/Reuters)

The smoke spreads in the sky from a fire in a tank of the U.S. Lyondellbasell chemicals group refinery, in Berre l'Etang, southern France, Tuesday, July 14, 2015. Two parallel explosions have rocked tanks at a chemical plant near Marseille Provence Airport . Authorities have launched an inquiry into the incident which occurred Tuesday morning as the country began celebrations for its national Bastille Day. Some 120 firefighter and 50 vehicles have been deployed to the petrochemical site, LyondellBasell, and air quality authorities are assessing if the fumes pose a threat to the quality of the air in the surrounding areas. There have been no reports of casualities. (Photo by AP Photo/Stringer)

Smoke billows into the sky from one of two fires that started overnight on a petrochemical facility owned by American firm LyondellBasell at the refineries around the Etang de Berre, near Marseille, southern France, France, July 14, 2015. Marseille firemen were still trying to extinguish one of two fires that started overnight on a petrochemical facility owned by American firm LyondellBasell and located near the airport of France's second largest city, a Reuters witness reported on Tuesday. Marseille authorities said no one had been injured on site but that reasons behind the two incidents were still unclear. (Photo by Philippe Laurenson/Reuters)

A newly arrived Jewish immigrant from North America reacts after disembarking from an airplane at Ben Gurion International Airport near Tel Aviv July 14, 2015. (Photo by Nir Elias/Reuters)

An aerial view shows Muslim worshippers praying at the Grand mosque, the holiest place in Islam, in the holy city of Mecca during Ramadan July 14, 2015, on Lailat al-Qadr, or Night of Power, on which the Koran was revealed to Prophet Mohammad by Allah. (Photo by Ali Al Qarni/Reuters)

A supporter of Movistar rider Alejandro Valverde of Spain dressed as an American Indian climbs on his bicycle before the 167-km (103.7 miles) 10th stage of the 102nd Tour de France cycling race from Tarbes to La Pierre-Saint-Martin, France, July 14, 2015. (Photo by Stefano Rellandini/Reuters)

Tong Jieping, 44-year-old mentally disabled patient, is chained by his foot inside his room, in Qunxing village of Wangjiang county, Anhui province, China, July 14, 2015. Tong was diagnosed mentally ill when he was in his 20s. His parents, both in their 70s, could not afford the medical treatments so they had to lock him up in chains to prevent him from running away, according to Tong's family. (Photo by Reuters/Stringer)

Soldiers react as they walk past coffins of troops killed after the collapse of a section of a barracks during a funeral ceremony in Omsk, Russia, July 14, 2015. At least 23 soldiers were killed when a military barracks collapsed in Russia's Omsk region, Russian news agencies said on Monday. (Photo by Dmitry Feoktistov/Reuters)

A woman takes photos with her mobile phone at the site of a Saudi-led air strike in Yemen's capital Sanaa July 14, 2015. A Saudi-led coalition of Arab states has been bombing the Iranian-allied Houthi rebel movement and army forces loyal to former Yemeni president Ali Abdullah Saleh since late March in a bid to restore exiled President Abd-Rabbu Mansour Hadi to power. (Photo by Khaled Abdullah/Reuters)

Sandy Smith stands in front of a mural of a scene from “To Kill a Mockingbird” while leading a walking tour in Monroeville, Alabama July 14, 2015. The southern hometown of author Harper Lee is celebrating the release of “Go Set a Watchman”, Lee's first published novel in 55 years. (Photo by Michael Spooneybarger/Reuters)

Mothers of missing women hold white balloons, in the shape of doves, during a protest outside a court in Ciudad Juarez, Mexico, July 14, 2015. Relatives and family members are protesting just hours before a court issued its verdict on six men accused of the disappearance and murder of 11 women, who were forced into prostitution, and whose bodies were found at El Navajo creek, local media reported. (Photo by Jose Luis Gonzalez/Reuters)

Revellers hold up red scarves and candles during the closing ceremony of the San Fermin festival in Pamplona, northern Spain, early July 15, 2015. Thousands of people gathered in front of the city's town hall to sing the traditional farewell song “Pobre de mi” (Poor me). The song is sung by revellers to show their sadness at the end of the festival. (Photo by Susana Vera/Reuters)

A student of the French National gendarmerie officers school takes pictures before the start of the traditional Bastille Day military parade in Paris, France, July 14, 2015. (Photo by Mal Langsdon/Reuters)

French President Francois Hollande (R), Mexico's President Enrique Pena Nieto (C) and Mexico's First Lady Angelica Rivera applaud during the traditional Bastille Day military parade in Paris, France, July 14, 2015. (Photo by Charles Platiau/Reuters)

Alphajets from the French Air Force Patrouille de France in the formation of a Croix de Lorraine cross and releasing trails of red, white and blue smoke, colors of French national flag, fly over the Pyramid of the Louvre Museum during the traditional Bastille day military parade in Paris, France, July 14, 2015. (Photo by Gonzalo Fuentes/Reuters)

Falconers of the Mexican army hold falcons as they march during the traditional Bastille Day military parade on the Place de la Concorde in Paris, France, July 14, 2015. (Photo by Charles Platiau/Reuters)

Mexican soldiers display birds of prey as the walk down the Champs-Elysees avenue during Bastille Day parade Tuesday, July 14, 2015, in Paris, France. Mexico's President Enrique Pena Nieto is the guest of honor at this year's event marking France's biggest holiday. (Photo by Michel Euler/AP Photo)

Soldiers from the French Foreign Legion march during the traditional Bastille Day military parade on the Place de la Concorde in Paris, France, July 14, 2015. (Photo by Pascal Rossignol/Reuters)

Jets for the Patrouille de France fly over the Champs Elysees avenue during the traditional Bastille Day parade in Paris, France, Tuesday, July 14, 2015. French anti-terrorist forces join the traditional military parade celebrating Bastille Day, as the country's leadership tries to show its muscle against extremists abroad and at home. Mexico's president is the guest of honor at this year's event marking France's biggest holiday. (Photo by Michel Euler/AP Photo)

A picture taken on July 14, 2015 from a French Air Force C-135 FR refueling tanker aircraft over the Arc de Triomphe monument shows troops marching on the Champs-Elysees avenue during the annual Bastille Day military parade in Paris on July 14, 2015. (Photo by Franck Pennant/AFP Photo)

An iPhone case with a pre-1980 Iranian flag is seen at a store in Westwood, Los Angeles, California, United States July 14, 2015. Iran and six major world powers reached a nuclear deal on Tuesday, capping more than a decade of negotiations with an agreement that could transform the Middle East. (Photo by Lucy Nicholson/Reuters)

Tea pots are pictured on the ground of the tent where Ahmad, a Syrian man from Idlib, lives with his family near the banks of Nahr Ibrahim river, in Mount Moussa nature reserve July 13, 2015. Ahmad, who has four children, burns wood to make charcoal for a living and lives with his family in the tent by the river banks within the nature reserve. Ahmad makes between $1 and $3 for every kilogram of charcoal he sells. (Photo by Alia Haju/Reuters)

People stand near bottled drinks which have fallen off a truck damaged by a Saudi-led air strike in Yemen's capital Sanaa July 14, 2015. A Saudi-led Arab coalition has been bombarding the Iranian-allied Houthi rebel movement – Yemen's dominant force – since late March in a bid to reinstate exiled President Abd-Rabbu Mansour Hadi, who has fled to Riyadh. (Photo by Khaled Abdullah/Reuters)

A local boy rides a bicycle towards Ukrainian government servicemen as they conduct a search for members of Right Sector in the village of Bobovyshche near Mukacheve, Ukraine, July 14, 2015. On Saturday, two people were killed in a firefight between members of the ultranationalist group, Right Sector, and police in the town of Mukacheve in western Ukraine, prompting President Petro Poroshenko to call for all “illegal groups” to disarm. (Photo by Reuters/Stringer)

Memory chip parts of U.S. memory chip maker MicronTechnology are pictured at their booth at an industrial fair in Frankfurt, Germany, July 14, 2015. China's state-backed Tsinghua Unigroup Ltd is preparing a $23 billion bid for Micron in what would be the biggest Chinese takeover of a U.S. company, people familiar with the matter said. (Photo by Kai Pfaffenbach/Reuters)

Yasukazu Hamada (2nd R), chairman of the Upper House Special Committee on Security, shouts as he is surrounded by opposition lawmakers during a vote on the security-related legislation at the parliament in Tokyo July 15, 2015. Legislation to implement a dramatic change in Japanese defence policy that could allow troops to fight abroad for the first time since World War Two was approved by a lower house panel on Wednesday, despite opposition from a majority of ordinary voters. (Photo by Toru Hanai/Reuters)

A boy sits between two “Cabezudos” (big headed figures) at the City Hall of Pamplona, Spain, July 14, 2015, during the last day of the San Fermin Festival. The festival is a symbol of Spanish culture that attracts thousands of tourists. (Photo by Miguel Riopa/AFP Photo)

Guests gather on the terrace of Hoernli hut in front of the Matterhorn mountain, Switzerland, July 14, 2015 as Zermatt celebrates 150 years since the first ascent of the Matterhorn mountain. On July 14, 1865, the British climber Edward Whymper reached the peak of the Matterhorn (4,478 metres above sea level) together with his rope team. (Photo by Dominic Steinmann/EPA)

A tractor makes its way along a row of lavender plants as they are harvested on the Lordington Lavender farm in West Sussex, southern England, Tuesday, July 14, 2015. (Photo by Andrew Matthews/PA Wire via AP Photo)

A member of the Indonesian police forces cordons off the wreck of a bus shortly after it crashed into a steel bar on a toll road in Cirebon, Indonesia, July 14, 2015. According top local reports the bus was carrying more than 40 passengers, mostly Muslims travelling to celebrate Eid al-Fitri hit the steel bar killing 12 and wounding dozens. During the last days of Ramadan tens of millions of Indonesians leave the country's cities to return to their villages by motorcycle, train, bus and boat to celebrate Eid al-Fitr, which marks the end of Ramadan. (Photo by EPA/Stringer)

Visitors wearing a yukata, summer kimono, float lanterns during Chiyoda-ku Noryo no Yube, Lanterns floating event on the Chidorigafuchi moat of the Imperial Palace in Chiyoda Ward, Tokyo on July 13, 2015. People boarding boats enjoyed a magical and wondrous lights from 700 lanters and 100 green-color LED. (Photo by The Yomiuri Shimbun via AP Images)

Models stand in a mirrored room during a presentation by Thom Browne at Men's Fashion Week in New York, Tuesday, July 14, 2015. The inaugural New York Men's Fashion Week runs through Thursday. (Photo by Seth Wenig/AP Photo)

Protestors dressed as foxes demonstrate in front of the Houses of Parliament in London, Tuesday, July 14, 2015 urging policymakers to keep Britain humane by keeping the Hunting Act intact. The government has called off the scheduled vote for Wednesday on fox hunting. (Photo by Frank Augstein/AP Photo)

A protestor dressed as foxes demonstrates in front of the Houses of Parliament in London, Tuesday, July 14, 2015 urging policymakers to keep Britain humane by keeping the Hunting Act intact. (Photo by Frank Augstein/AP Photo)