[Q]: Sentence: In 1952 researchers at Ciba discovered the first orally available vasodilator, hydralazine. Question: In what year was hydralazine discovered?
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[A]: yes

[Q]: Sentence: The electromagnetic field obeys laws of motion similarly to a mass on a spring, and can come to thermal equilibrium with hot atoms. Question: What is required for the electromagnetic field to come to thermal equilibrium?
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[A]: yes

[Q]: Sentence: The Information Office of the State Council of the PRC preserves an edict of the Zhengtong Emperor (r. 14351449) addressed to the Karmapa in 1445, written after the latter's agent had brought holy relics to the Ming court. Question: Who maintains an edict of the Zhengtong Emperor?
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[A]:
yes