Input: British Empire
The ability of the Dominions to set their own foreign policy, independent of Britain, was recognised at the 1923 Imperial Conference. Britain's request for military assistance from the Dominions at the outbreak of the Chanak Crisis the previous year had been turned down by Canada and South Africa, and Canada had refused to be bound by the 1923 Treaty of Lausanne. After pressure from Ireland and South Africa, the 1926 Imperial Conference issued the Balfour Declaration, declaring the Dominions to be "autonomous Communities within the British Empire, equal in status, in no way subordinate one to another" within a "British Commonwealth of Nations". This declaration was given legal substance under the 1931 Statute of Westminster. The parliaments of Canada, Australia, New Zealand, the Union of South Africa, the Irish Free State and Newfoundland were now independent of British legislative control, they could nullify British laws and Britain could no longer pass laws for them without their consent. Newfoundland reverted to colonial status in 1933, suffering from financial difficulties during the Great Depression. Ireland distanced itself further from Britain with the introduction of a new constitution in 1937, making it a republic in all but name.

When did Ireland issue a new constitution?
Output: 1937

Input: Alfred North Whitehead
The ultimate substantive legacy of Principia Mathematica is mixed. It is generally accepted that Kurt Godel's incompleteness theorem of 1931 definitively demonstrated that for any set of axioms and inference rules proposed to encapsulate mathematics, there would in fact be some truths of mathematics which could not be deduced from them, and hence that Principia Mathematica could never achieve its aims. However, Godel could not have come to this conclusion without Whitehead and Russell's book. In this way, Principia Mathematica's legacy might be described as its key role in disproving the possibility of achieving its own stated goals. But beyond this somewhat ironic legacy, the book popularized modern mathematical logic and drew important connections between logic, epistemology, and metaphysics.

When was Kurt Godel's incompleteness theorem?
Output: 1931

Input: 2008 Sichuan earthquake
The 2008 Sichuan earthquake or the Great Sichuan earthquake, measured at 8.0 Ms and 7.9 Mw, and occurred at 02:28:01 PM China Standard Time at epicenter (06:28:01 UTC) on May 12 in Sichuan province, killed 69,197 people and left 18,222 missing.

What year did the Sichuan earthquake take place?
Output: 2008

Input: Bermuda
Because of its limited land area, Bermuda has had difficulty with over-population. In the first two centuries of settlement, it relied on steady human emigration to keep the population manageable.[citation needed] Before the American Revolution more than ten thousand Bermudians (over half of the total population through the years) gradually emigrated, primarily to the Southern United States. As Great Britain displaced Spain as the dominant European imperial power, it opened up more land for colonial development. A steady trickle of outward migration continued. With seafaring the only real industry in the early decades, by the end of the 18th century, at least a third of the island's manpower was at sea at any one time.

Why does a third of the population spend time at sea?
Output:
seafaring the only real industry