QUESTION: Generate a question with a factual answer?

ANS: What was the longest that a song spent at #1 on the adult contemporary charts in the 1980s?

QUESTION: Generate a question with a factual answer?

ANS: Which weapon caused a major shift in anti-aircraft strategy?

QUESTION: Generate a question with a factual answer?

ANS: What professions normally have the highest risk of problems?

QUESTION: Generate a question with a factual answer?

ANS:
What does "A/D" stand for?