[Q]: Sentence: The preferred official umbrella term is "black and minority ethnic" (BME), but sometimes the term "black" is used on its own, to express unified opposition to racism, as in the Southall Black Sisters, which started with a mainly British Asian constituency, and the National Black Police Association, which has a membership of "African, African-Caribbean and Asian origin". Question: When did Britain encourage immigration of workers?
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[A]: no

[Q]: Sentence: Britain encouraged the immigration of workers from the Caribbean after World War II; the first symbolic movement was those who came on the ship the Empire Windrush. Question: When did Britain encourage immigration of workers?
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[A]: yes

[Q]: Sentence: For the first time in the show's history, the top 5 contestants were all female. Question: Who was the last guy to be sent home on season 12 of American Idol?
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[A]:
no