Input: Read this: The work of David Hilbert and Max Planck was crucial to the foundation of modern physics, which Werner Heisenberg and Erwin Schrodinger developed further. They were preceded by such key physicists as Hermann von Helmholtz, Joseph von Fraunhofer, and Gabriel Daniel Fahrenheit, among others. Wilhelm Conrad Rontgen discovered X-rays, an accomplishment that made him the first winner of the Nobel Prize in Physics in 1901. The Walhalla temple for "laudable and distinguished Germans", features a number of scientists, and is located east of Regensburg, in Bavaria.
Question: Who got a Nobel Prize in Physics in the 19th century for discovering the X-ray?

Output: unanswerable

Input: Read this: New York is a prominent location for the American entertainment industry, with many films, television series, books, and other media being set there. As of 2012, New York City was the second largest center for filmmaking and television production in the United States, producing about 200 feature films annually, employing 130,000 individuals, and generating an estimated $7.1 billion in direct expenditures, and by volume, New York is the world leader in independent film production; one-third of all American independent films are produced in New York City. The Association of Independent Commercial Producers is also based in New York. In the first five months of 2014 alone, location filming for television pilots in New York City exceeded the record production levels for all of 2013, with New York surpassing Los Angeles as the top North American city for the same distinction during the 2013/2014 cycle.
Question: Approximately how many feature films are made in New York City every year?

Output: 200

Input: Read this: Before Prince Albert's death, the palace was frequently the scene of musical entertainments, and the greatest contemporary musicians entertained at Buckingham Palace. The composer Felix Mendelssohn is known to have played there on three occasions. Johann Strauss II and his orchestra played there when in England. Strauss's "Alice Polka" was first performed at the palace in 1849 in honour of the queen's daughter, Princess Alice. Under Victoria, Buckingham Palace was frequently the scene of lavish costume balls, in addition to the usual royal ceremonies, investitures and presentations.
Question: Who performed Alice Polka in opposition of Princess Alice?

Output: unanswerable

Input: Read this: American Idol has traditionally released studio recordings of contestants' performances as well as the winner's coronation single for sale. For the first five seasons, the recordings were released as a compilation album at the end of the season. All five of these albums reached the top ten in Billboard 200 which made then American Idol the most successful soundtrack franchise of any motion picture or television program. Starting late in season five, individual performances were released during the season as digital downloads, initially from the American Idol official website only. In season seven the live performances and studio recordings were made available during the season from iTunes when it joined as a sponsor. In Season ten the weekly studio recordings were also released as compilation digital album straight after performance night.
Question: When did iTunes become a sponsor on American Idol?

Output:
season seven