Q: Does "They were divorced on July 25, 1988, and the marriage was formally annulled in 1997." provide a valid answer to "When did Kerry and his wife divorce?"?
A: yes

Q: Does "According to the 2010 revison of the UN World Population Prospects, Guinea-Bissau's population was 1,515,000 in 2010, compared to 518,000 in 1950." provide a valid answer to "What is the source of the population data?"?
A: yes

Q: Does "As dynamic response requirements increase, more specialized motor designs such as coreless motors are used." provide a valid answer to "When might coreless motors be used in servo applications?"?
A: yes

Q: Does "Technology had advanced to the point that pottery was becoming common and the small-scale felling of trees had become feasible." provide a valid answer to "What was the intentional burning of vegetation intended to mimic?"?
A:
no