Ding Ning of China serves against Yuka Ishigaki of Japan during their final match of the World Team Table Tennis Championships in Tokyo, on May 5, 2014. (Photo by Shizuo Kambayashi/Associated Press)

Kazakh troops march during a parade of the armed forces to mark the Defender of the Fatherland Day in Astana, May 7, 2014. (Photo by Mukhtar Kholdorbekov/Reuters)

A man looks at an official painting by French street artist Christian Guemy, aka C215, representing Pope Francis on May 9, 2014 at the Piazza di Spagna metro station in Rome. Pope's portrait is part of an artistic project launched by Rome's transportation company Atac. (Photo by Alberto Pizzoli/AFP Photo)

Tourists wearing rental traditional kimonos for maiko, an apprentice geisha, walk through the Gion area of Kyoto, Japan, on Saturday, May 3, 2014. (Photo by Tomohiro Ohsumi/Bloomberg)

South Korean citizens display yellow paper boats wishing for the safe return of the sunken Sewol ferry's missing passengers in front of the Seoul City hall in Seoul, South Korea, May 6, 2014. The South Korean ferry that sank last month was carrying more than three times its maximum cargo weight, a news report quoted investigators as saying May 6, 2014. (Photo by Jeon Heon-Kyun/EPA)

Nick Malceski and Dane Rampe of the Swans competes for the ball against Jack Gunston and Isaac Smith of the Hawks during the round eight AFL match between the Sydney Swans and the Hawthorn Hawks at ANZ Stadium on May 9, 2014 in Sydney, Australia. (Photo by Ryan Pierse/Getty Images)

Chicago White Sox first baseman Jose Abreu shows his glove to first base umpire Marvin Hudson, after catching a fly ball off the bat of Chicago Cubs' Darwin Barney in the seats, during the second inning of an interleague baseball game Wednesday, May 7, 2014, in Chicago. (Photo by Charles Rex Arbogast/AP Photo)

A Filipino informal settler is seen inside a shanty dwelling along a polluted river in Manila, Philippines, May 6, 2014. According to the latest survey of the Social Weather Stations (SWS), 11.5 million Filipino households or 53 per cent of the survey respondents defined themselves as poor. (Photo by Ritchie B. Tongo/EPA)

People carrying portraits of deceased relatives who took part in World War Two, march in a parade during Victory Day commemorations in the town of Divnogorsk, near Russia's Siberian city of Krasnoyarsk, May 9, 2014. Russia celebrates the 69th anniversary of the victory over Nazi Germany on Friday. (Photo by Ilya Naymushin/Reuters)

Survivors try to get some donations near the site of Friday's landslide that buried Abi Barik village in Badakhshan province, northeastern Afghanistan, on May 5, 2014. As Afghans observed a day of mourning Sunday for the hundreds of people killed in a horrific landslide, authorities tried to help the 700 families displaced by the torrent of mud that swept through their village. (Photo by Massoud Hossaini/Associated Press)

Lead archaeology workers supervise as their colleagues dig a newly-discovered tomb says tomb dating back to around 1100 B.C. at the Saqqara archaeological site, 30 kilometers (19 miles) south of Cairo, Egypt, Thursday, May 8, 2014. Antiquities Minister Mohamed Ibrahim said Thursday that the tomb belongs to a guard of the army archives and royal messenger to foreign countries. Ibrahim says the Cairo University Faculty of Archaeology’s discovery at Saqqara adds “a chapter to our knowledge about the history of Saqqara”. Saqqara was the necropolis for the ancient Egyptian city of Memphis and site of the oldest known pyramid in Egypt. (Photo by Amr Nabil/AP Photo)

Pro-Russian armed men ride on top of an armoured personnel carrier near the town of Slaviansk, eastern Ukraine, May 5, 2014. Pro-Russian separatists ambushed Ukrainian forces on Monday, triggering heavy fighting on the outskirts of the rebel stronghold of Slaviansk, Interior Minister Arsen Avakov was quoted as saying. (Photo by Baz Ratner/Reuters)

A paramilitary policeman crawls under fire obstacles during a drill at a military base in Chaohu, Anhui province May 5, 2014. (Photo by Reuters/China Daily)

Promotional models use their smartphones during their break at the Global Mobile Internet Conference in Beijing May 6, 2014. Mobile Internet industry executives, developers and investors from more than 30 countries took part in the Global Mobile Internet Conference in Beijing, the organiser said. (Photo by Kim Kyung-Hoon/Reuters)

The head of Edith Piaf's wax statue is wrapped in plastic at the Paris Grevin Wax Museum's workshop before it is shipped to Prague for the opening of their new museum, April 11, 2014. Statues are prepared ahead of the opening of the new Grevin Wax Museum in Prague on May 1st. Fifteen artists, including sculptors, moulders, dressmakers, make-up artists, wig makers, hairdressers along with lighting and set designers and sound engineers are involved in the creation of the hyper realistic statues. The Grevin Museum opened in Paris in 1882. (Photo by Philippe Wojazer/Reuters)

Nili Patera, one of the most active dune fields on the planet Mars is shown in this handout photo taken by NASA's Mars Reconnaissance Orbiter March 1, 2014 and provide by NASA May 2, 2014. By monitoring the sand dune changes, NASA can determine how winds vary seasonally and year-to-year. (Photo by Reuters/NASA/JPL-Caltech/Univ. of Arizona)

Paris' Grevin Wax Museum painter Franck Bruneau works on the head of Rolling Stones lead singer Mick Jagger at their workshop in Paris, April 9, 2014. The statue is prepared ahead of the opening of the new Grevin Wax Museum in Prague on May 1st. (Photo by Philippe Wojazer/Reuters)

A boy wears a Darth Vader mask as he sits on a man's shoulders before the Star Wars Run race ahead of Star Wars Day in Buenos Aires May 3, 2014. (Photo by Marcos Brindicci/Reuters)

Afghan children displaced after a landslide wait for relief in Argu village, Badakhshan province, Afghanistan, 03 May 2014. At least 260 people have been found dead and 300 families are still missing and feared dead in the mudslide in the north-eastern Afghanistan village of Ab-e-Barik in Argu district. About 2,000 people have fled the area of the fatal mudslide, police said. The disaster occurred on 02 May after heavy rainfall in the mountainous province of Badakhshan, burying an entire village. (Photo by Muhammad Sharif/EPA)

The spiral galaxy M101 is pictured in this undated handout photo from NASA's Chandra X-Ray Observatory. M101 is a spiral galaxy like our Milky Way, but about 70 percent bigger. It is located about 21 million light years from Earth. (Photo by Reuters/NASA)

U.S. Secretary of State John Kerry kicks a soccer ball while talking on his cellphone during an airplane refuelling stop, while enroute to Washington, at Sal Island, Cape Verde, May 5, 2014. (Photo by Saul Loeb/Reuters)

Buddhists place lotus-shaped candle holders to form the shape of a swastika, an auspicious symbol, during a ceremony to celebrate Buddha's birthday at the Yufo Temple in Shanghai May 6, 2014. (Photo by Aly Song/Reuters)

Children play on a parked cycle rickshaw outside their home in New Delhi May 6, 2014. (Photo by Adnan Abidi/Reuters)

U.S. singer Miley Cyrus performs at the O2 Arena in central London May 6, 2014. (Photo by Olivia Harris/Reuters)

Dien Bien Phu battle veterans arrive to attend the 60th anniversary celebrations of the Dien Bien Phu battle in the historic city May 7, 2014. Viet Minh forces overran the French garrison in Dien Bien Phu on May 7, 1954 after a 56-day siege, forcing the French government to abandon its colonial rule in Indochina. (Photo by Reuters/Kham)

A model poses with a vivid yellow 100.09 carats diamond (L) and a 103.46 carats diamond ring during an auction preview at Sotheby's in Geneva May 7, 2014. These items are expected to reach between CHF 13,250,000 to 22,250,000 (USD 15,000,000 to 25,000,000) and CHF 3,100,00 and 4,450,000 (USD 3,500,00 to 5,000,000) when they go on sale May 13, 2014 in Geneva. (Photo by Denis Balibouse/Reuters)

Dutch tourists Rosanna (L) and Nova pose for a photograph inside the bedroom of the “Crazy House”, which is completely built upside-down, in the village of Affoldern near the Edersee lake, May 7, 2014. Three friends came up with the idea to build the tourist attraction, which cost about 200,000 euros and took some six weeks to complete. Camera was turned 180 degrees for the picture. (Photo by Kai Pfaffenbach/Reuters)

A mock “missing persons” poster with a picture of Toronto Mayor Rob Ford is seen in Toronto, May 7, 2014. Toronto Mayor Rob Ford, who said last month he would take time off to get treatment for an alcohol problem, described rehab as “amazing” and said he would return in time for the upcoming city election, a Toronto newspaper reported on Wednesday. Ford gained global notoriety last year after he admitted he had smoked crack, bought illegal drugs and driven after drinking, but refused to step down or seek treatment. (Photo by Mark Blinch/Reuters)

A man with balloons attached to his helmet poses for a picture as pro-Russian activists hold a rally near the headquarters of the regional interior ministry to demand the resignation of its head Anatoly Naumenko in Luhansk, eastern Ukraine, May 7, 2014. (Photo by Valentyn Ogirenko/Reuters)

This NASA composite image released on May 7, 2014 shows one of the clusters, NGC 2024, which is found in the center of the so-called Flame Nebula, about 1,400 light years from Earth. In this image, X-rays from Chandra are seen as purple, while infrared data from NASA's Spitzer Space Telescope are colored red, green, and blue. A study of NGC 2024 and the Orion Nebula Cluster, another region where many stars are forming, suggest that the stars on the outskirts of these clusters are older than those in the central regions, according to NASA. (Photo by K.Getman, E.Feigelson, M.Kuhn & the MYStIX team/Reuters/NASA/CXC/PSU/JPL-Caltech)

People dance during a ceremony to congratulate veterans of World War Two with Victory Day in the centre of Russia's Siberian city of Krasnoyarsk, May 7, 2014. Russia marks the anniversary of their victory over Nazi Germany on May 9. (Photo by Ilya Naymushin/Reuters)