A child member of the Borriquita brotherhood stands on a street during celebrations marking the Christian feast of Palm Sunday in Sevilla on April 13, 2014. Palm Sunday held annually on the Sunday before easter and commemorates the entry into Jerusalem of Jesus Christ. (Photo by Gogo Lobato/AFP Photo)

Rescue workers and onlookers stand next to derailed coaches of a passenger train in the northeastern Indian state of Assam April 16, 2014. Dozens of passengers on Wednesday were injured after the engine and ten coaches of the train derailed in Assam, local media reported. (Photo by Reuters)

Indian policemen stand by a train that derailed near Jagiroad Railway Station, about 90 kilometers (56 miles) east of Gauhati, India, Wednesday, April 16, 2014. According to a Northeast Frontier Railway officer, dozens of people were injured when the train jumped the tracks and derailed early Wednesday. (Photo by Anupam Nath/AP Photo)

The derailed engine and carriages of the BG Express Train No.15666 at Ajuri station near Morigaon district of Assam state, about 80km away from Guwahati city, India, 16 April 2014. At least 45 people were injured when nine coaches of Dimapur-Kamakhya BG Express derailed in central Assam in the wee hours, a news reports said. (Photo by EPA/STR)

Authorities work on the scene of a fatal accident where two workers died in Bourne, Mass., Saturday, April 12, 2014. Their bucket truck apparently tipped over while they were in the basket more than 100 feet in the air at a Cape Cod site. (Photo by Steve Heaslip/AP Photo/Cape Cod Times)

Children walk during rain in front of Saint Michel Catholic church in the town of Boda April 14, 2014. (Photo by Goran Tomasevic/Reuters)

Visitors walk by a gardening sculpture during an opening test run at the 2014 International Horticultural Expo at Baiguo Mountain Forest Park in Qingdao city, Shandong province, China, 13 April 2014. The garden expo will open to the public from 25 April to 25 October with the theme of “From the Earth, for the Earth”. (Photo by Wu Hong/EPA)

Opposition demonstrators try to take cover behind shields during clashes with police in Chacao, Caracas, April 16, 2014. Protests against Venezuelan President Nicolas Maduro's government have left 41 people dead and more than 650 injured, according to authorities. Maduro, the hand-picked successor to the late Venezuelan president Hugo Chavez, has accused demonstrators of trying to topple his government. (Photo by Miguel Gutierrez/EPA)

A young girl blows a bubble at the Old Town Square in Prague, Czech Republic, Monday, April 14, 2014. (Photo by Petr David Josek/AP Photo)

A man watches the protest “For April / Against Robberies in Pensions / March of Outrage and Protest” from a coffee shop in Lisbon, Portugal, 12 April 2014. The protest took place in several cities in Portugal with thousands of pensioners protesting against the austerity measures. (Photo by Mario Cruz/EPA)

Christian devotees re-enact the crucifixion of Jesus Christ to mark Good Friday in Mumbai, India, on April 18, 2014. (Photo by Rajanish Kakade/Associated Press)

A member of the brotherhood “Nuestro Padre Jesus de los Reyes en su Entrada Triunfal en Jerusalen, Maria Santisima de la Victoria y Nuestra Senora de la Palma” (Our Father Jesus King of Kings at his Triumphal Entry to Jerusalem, Holy Mary of Victory and Our Lady of Palm) peers through a gate his brotherhood's church before the start of the Sunday Palm procession in Cordoba, Spain, 13 April 2014. (Photo by Rafa Alcaide/EPA)

Costumed German Velia poses during the cherry blossom festival in Berlin, Germany, 13 April 2014. The traditional festival is celebrated in the “Gaerten der Welt” (Gardens of the World). (Photo by Joerg Carstensen/EPA)

Netapp Endura team rider Slovenian Blaz Jarc (R) crashes into Katusha team rider Russian Viacheslav Kuznetsov (ground) during the 112th Paris Roubaix cycling race, in Roubaix, France, 13 April 2014. (Photo by Nicolas Bouvy/EPA)

Penitents from “El Museo” brotherhood walk to the church to start a procession, April 14, 2014, in Seville, Spain. Easter week is traditionally celebrated with processions in most Spanish towns. (Photo by Pablo Blazquez Dominguez/Getty Images)

A man dressed in a costume from the movie Predator buys an ice cream at the MCM Ireland Comic Con at the RDS in Dublin, on April 13, 2014. (Photo by Niall Carson/PA Wire)

A participant of the “Spartan Race” jumps over a fire at the Olympiapark in Munich, southern Germany, Saturday, April 12, 2014. The participants had to overcome numerous obstacles on the route through the race. (Photo by Andreas Gebert/AP Photo/DPA)

Artists look over pieces of guns after a news conference with various officials and artists announcing gallery owner Jonathan Ferrara's “Guns In The Hands Of Artists” project in New Orleans, Wednesday, April 16, 2014. New Orleans artists will get a chance to express themselves using weapons removed from the streets of New Orleans. In a partnership of the Police Department and the city's art community, artists Wednesday will select from among near 190 guns police received in a buyback program. They'll take the weapons and turn them into artworks. (Photo by Gerald Herbert/AP Photo)

Riot police and protesters clash as thousands of people protest against Italian government and austerity measures in Rome, Italy, 12 April 2014. (Photo by Angelo Carconi/EPA)

Students from different classes attend an outdoor joint lesson outside a school building in Guangzhou, Guangdong province April 18, 2014. (Photo by Alex Lee/Reuters)

India activists from People for the Ethical Treatment of Animals (PETA) dressed as rabbits hold placards during a protest in New Delhi on April 18, 2014. The protest ahead of the forthcoming World Week for Animals in Laboratories was held to demand the Ministry of Health and Family Welbare ban the marketing and sale of animal-tested cosmetics and household products. (Photo by AFP Photo/Raveendran)

A boy walks past a piece of new graffiti street art, claimed to be by the secretive underground guerilla artist Banksy, which appeared on the side of a house in Cheltenham this weekend, on April 14, 2014 in Gloucestershire, England. The artwork, which shows three stencil figures listening into a conversation in an existing telephone box, is just a few miles away from Government Communications Headquaters (GCHQ), which is responsible for providing intelligence and information assurance to the British Government and Armed Forces. (Photo by Matt Cardy/Getty Images)

Lenox Barden, 5, gives a high five to Iron Man through a window on the fourth floor of WakeMed Children's hospital as three window washers dressed as Superheroes rappel down the side of the building Wednesday, April 16, 2014 in Raleigh, N.C. This was the second year that Batman, Iron Man and Spiderman have thrilled the children at the hospital. (Chuck Liddy/Raleigh News & Observer/MCT via Getty Images)

Model Micaela Schaefer poses with a toy rabbit and Easter eggs during a Easter photocall in front of the Brandenburg Gate on April 16, 2014 in Berlin, Germany. (Photo by Patrick Hoffmann/WENN/SIPA Press)

A Palestinian child uses a sling to hurl rocks toward Israeli soldiers during clashes in the West Bank city of Hebron, 16 April 2014. An Israeli policeman was shot dead on Passover night outside Hebron and today a large procession was held by Jewish settlers in the divided city of Hebron. Israeli police report 7 Palestinians wounded by rubber-coated steel bullets fired by police to disperse the crowd. (Photo by Abed Al Hashlamoun/EPA)

An ultra-Orthodox Jewish youth burns leavened items in final preparation for the Passover holiday in the ultra-Orthodox Jewish town of Bnei Brak, near Tel Aviv, Israel, Monday, April 14, 2014. Jews are forbidden to eat leavened foodstuffs during the Passover holiday that celebrates the biblical story of the Israelites' escape from slavery and exodus from Egypt. (Photo by Oded Balilty/AP Photo)

J. P. Norden stands on the pavement as he's greeted by students from Ashland High School while walking in the 1st Annual Legs for Life Walk on April 15, 2014 in Ashland, Ma. The fund raising walk was put together by the Norden family, whose two sons, J.P. and Paul Norden lost their right legs during the Boston Marathon bombing in 2013. The walk took place on the exact Boston Marathon route on the first anniversary of the Boston Marathon bombing. (Photo by Ricky Carioti/The Washington Post)

A woman is caught in the wind and rain as a cold front moves into Houston, on April 14, 2014. The cold front has brought snow to the Texas Panhandle, hail to the central part of the state and forecasts for freezing conditions accompanied by strong winds. (Photo by Mayra Beltran/Houston Chronicle)

Rescuers and investigators are seen at the site where a train derailed in the Hailun country of Suihua City, northeast China's Heilongjiang province, 13 April 2014. A passenger train which runs from Heihe to Harbin, derailed at the section in Hailun county in the early morning hours of 13 April 2014, causing 15 passengers suffering injuries, according to local media reports. A cause for the accident was not immediately reported. (Photo by EPA/STR)