[Q]: Sentence: As a pure metal, tin was much too soft to be used for any practical purpose. Question: Why was tin was rarely used for everyday use?
++++++++++
[A]: yes

[Q]: Sentence: The first beer pump known in England is believed to have been invented by John Lofting (b. Netherlands 1659-d. Question: Who invented the beer pump in England?
++++++++++
[A]: yes

[Q]: Sentence: It was an enormous hit, winning three Academy Awards (for editing, original score and sound) and grossing more than $470 million worldwide at the box office. Question: How much did 'Jaws' earn in theaters?
++++++++++
[A]:
yes