In this task, you will be presented with a context passage, a question about that paragraph, and a possible answer to that question. The task is to check the validity of the answer. Answer with "Yes" or "No".

[EX Q]: You may be wondering, how can a glacier get so big? Why does it move? These are both good questions. In the winter months, precipitation falls as snow. This solid form of water builds up on the ground as long as the temperatures stay cold enough. As the temperature rises, the snow starts to melt. The frozen water changes state back into a liquid state. Nearer the poles, summer does not last very long. If the summer is long enough and warm enough, all the snow may melt. This is what typically happens now. The earth was a little cooler 12,000 years ago. As a result, during the summer months, that amount of snow did not melt. It may have only been an inch or so of snow that melted. The following winter, snow fell on top of this left-over snow. This next winters snowfall had a head start. Year after year, the snow that did not melt became thicker and thicker. Inch by inch the snow started to build up. Over many years, layer upon layer of snow compacted and turned to ice. <sep>How do glaciers form?<sep>Layer upon layer of snow compacted and turned to ice
[EX A]: Yes

[EX Q]: Tuesday, September 11, 2001, dawned temperate and nearly cloudless in the eastern United States. Millions of men and women readied themselves for work. Some made their way to the Twin Towers, the signature structures of the World Trade Center complex in New York City. Others went to Arlington, Virginia, to the Pentagon. Across the Potomac River, the United States Congress was back in session. At the other end of Pennsylvania Avenue, people began to line up for a White House tour. In Sarasota, Florida, President George W. Bush went for an early morning run. For those heading to an airport, weather conditions could not have been better for a safe and pleasant journey. Among the travelers were Mohamed Atta and Abdul Aziz al Omari, who arrived at the airport in Portland, Maine. Boston: American 11 and United 175. Atta and Omari boarded a 6:00 A.M. flight from Portland to Boston's Logan International Airport. When he checked in for his flight to Boston, Atta was selected by a computerized prescreening system known as CAPPS (Computer Assisted Passenger Prescreening System), created to identify passengers who should be subject to special security measures. Under security rules in place at the time, the only consequence of Atta's selection by CAPPS was that his checked bags were held off the plane until it was confirmed that he had boarded the aircraft. This did not hinder Atta's plans. Atta and Omari arrived in Boston at 6:45. Seven minutes later, Atta apparently took a call from Marwan al Shehhi, a longtime colleague who was at another terminal at Logan Airport. They spoke for three minutes. It would be their final conversation. <sep>At what time did Atta end his call with Marwan Al Shehhi?<sep>6:07
[EX A]: No

[EX Q]: Ace , a wannabe rock star , is on his way to a concert of the band Guitar Wolf when space aliens invade the Earth . As a result the dead rise to their feet in the countryside setting of Asahi , Japan , with an appetite for flesh . Enlisting the help of his rock 'n roll blood brother Guitar Wolf , Ace and the members of the band get entangled in many misadventures with crazy rock managers in very tight shorts , transsexuals , naked women shooting guns in the shower , and bloodthirsty zombies ready to tear them apart . Leather jackets , loud over-modulated music , laser guitar picks , motorcycles , guns , muscle cars , and fire abound . Guitar Wolf , a Japanese trio signed to Matador Records in the US and self-proclaimed coolest rock band in the world star as the well-coiffed heroes . It is also a love story , between Ace and Tobio , a trans woman . The music , in a garage punk vein , plays an important role in the film . It features music from Greg Cartwright of Reigning Sound and The Oblivians . His 1997 song '' Twice as Deep '' by Greg Oblivian & the Tip Tops is featured . This film is similar to another movie by a Spanish punk group , La matanza can bal de los garrulos lis rgicos produced by Siniestro Total <sep>What musical artist(s) plays an important role in the film?<sep>Greg Cartwright of Reigning Sound and The Oblivians
[EX A]:
Yes