Input: Read this: Mobbing can be an interspecies activity: it is common for birds to respond to mobbing calls of a different species. Many birds will show up at the sight of mobbing and watch and call, but not participate. It should also be noted that some species can be on both ends of a mobbing attack. Crows are frequently mobbed by smaller songbirds as they prey on eggs and young from these birds' nests, but these same crows will cooperate with smaller birds to drive away hawks or larger mammalian predators. On occasion, birds will mob animals that pose no threat.
Question: What are hawks often mobbed by when they try to eat their eggs?

Output: unanswerable


Input: Read this: José Manuel González-Páramo, a Spanish member of the Executive Board since June 2004, was due to leave the board in early June 2012 and no replacement had been named as of late May 2012. The Spanish had nominated Barcelona-born Antonio Sáinz de Vicuña, an ECB veteran who heads its legal department, as González-Páramo's replacement as early as January 2012 but alternatives from Luxembourg, Finland, and Slovenia were put forward and no decision made by May. After a long political battle, Luxembourg's Yves Mersch, was appointed as González-Páramo's replacement.
Question: Who was ulitmately named as González-Páramo's assistant?

Output: unanswerable


Input: Read this: In July 1943, as a result of the American Federation of Musicians boycott of US recording studios, the a cappella vocal group The Song Spinners had a best-seller with "Comin' In On A Wing And A Prayer". In the 1950s several recording groups, notably The Hi-Los and the Four Freshmen, introduced complex jazz harmonies to a cappella performances. The King's Singers are credited with promoting interest in small-group a cappella performances in the 1960s. In 1983 an a cappella group known as The Flying Pickets had a Christmas 'number one' in the UK with a cover of Yazoo's (known in the US as Yaz) "Only You". A cappella music attained renewed prominence from the late 1980s onward, spurred by the success of Top 40 recordings by artists such as The Manhattan Transfer, Bobby McFerrin, Huey Lewis and the News, All-4-One, The Nylons, Backstreet Boys and Boyz II Men.[citation needed]
Question: What a cappella group rose to popularity in 1943?

Output: The Song Spinners


Input: Read this: Tourism is a vital industry for New York City, which has witnessed a growing combined volume of international and domestic tourists – receiving approximately 51 million tourists in 2011, 54 million in 2013, and a record 56.4 million in 2014. Tourism generated an all-time high US$61.3 billion in overall economic impact for New York City in 2014.
Question: How many people came to visit New York in 2013?

Output:
54 million