[Q]: Sentence: On 6 August 1940, Estonia was annexed by the Soviet Union as the Estonian SSR. Question: What date was Estonia annexed by the Soviets?
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[A]: yes

[Q]: Sentence: A semiochemical is a message-carrying chemical that is meant to attract, repel, and convey information. Question: Kairomones are a type of what?
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[A]: no

[Q]: Sentence: Lead glass or flint glass is more 'brilliant' because the increased refractive index causes noticeably more specular reflection and increased optical dispersion. Question: What is the benefit of thorium oxide in addition to its refractive index?
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[A]:
no