In game theory, what notable work was developed by the American mathematician Merrill M. Flood that exemplifies why two individuals might find it hard to cooperate against their best interest?
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Answer: Prisoner's dilemma

When did was the cease fire of the event that started when the Kwantung Army of the Empire of Japan invaded Manchuria?
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Answer: May 31, 1933

Who one of the leading poets of the First World War, who was the first known user of the phrase "the pity of war" ?
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Answer:
Wilfred Edward Salter Owen