Input: Article: 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.

Now answer this question: How many tourists visited New York in 2011?

Output: 51 million

Input: Article: The black-body problem was revisited in 1905, when Rayleigh and Jeans (on the one hand) and Einstein (on the other hand) independently proved that classical electromagnetism could never account for the observed spectrum. These proofs are commonly known as the "ultraviolet catastrophe", a name coined by Paul Ehrenfest in 1911. They contributed greatly (along with Einstein's work on the photoelectric effect) to convincing physicists that Planck's postulate of quantized energy levels was more than a mere mathematical formalism. The very first Solvay Conference in 1911 was devoted to "the theory of radiation and quanta". Max Planck received the 1918 Nobel Prize in Physics "in recognition of the services he rendered to the advancement of Physics by his discovery of energy quanta".

Now answer this question: When was the first Solvay Conference held?

Output: 1911

Input: Article: In editorials published on 29 and 31 July 1914, Wickham Steed, the Times's Chief Editor, argued that the British Empire should enter World War I. On 8 May 1920, also under the editorship of Steed, The Times in an editorial endorsed the anti-Semitic fabrication The Protocols of the Learned Elders of Zion as a genuine document, and called Jews the world's greatest danger. In the leader entitled "The Jewish Peril, a Disturbing Pamphlet: Call for Inquiry", Steed wrote about The Protocols of the Elders of Zion:

Now answer this question: Who was The Times' Chief Editor in 1914?

Output:
Wickham Steed