Generate a question with a factual answer.
Generated: At which intersection does E 122nd Street terminate?

Generate a question with a factual answer.
Generated: Who came up with the word "ecology"?

Generate a question with a factual answer.
Generated: How long was there a homogeneous culture on the North American plains?

Generate a question with a factual answer.
Generated: What is the most commonly abused substance during adolescent years in the U.S.?