[Q]: Sentence: Eisenhower returned to the U.S. in December 1939 and was assigned as a battalion commander and regimental executive officer of the 15th Infantry at Fort Lewis, Washington. Question: What unit did Eisenhower serve with upon his return to the United States?
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[A]: yes

[Q]: Sentence: The site of Richmond had been an important village of the Powhatan Confederacy, and was briefly settled by English colonists from Jamestown in 1609, and in 16101611. Question: When was Richmond first settled?
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[A]: yes

[Q]: Sentence: From the end of the 1960s, it became common to divide mainstream rock music into soft and hard rock, with both emerging as major radio formats in the US. Question: As of what year was hard rock a mainstream type of music?
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[A]:
no