QUESTION: Generate a question with a factual answer?

ANS: What is the east-west waterway near Nanjing?

QUESTION: Generate a question with a factual answer?

ANS: What one criteria was used in early times to judge a great power's status?

QUESTION: Generate a question with a factual answer?

ANS: What animal can its feeding habits disturbed by the Prunus spinosa?

QUESTION: Generate a question with a factual answer?

ANS:
What has had major effects on the transmission of diarrheal diseases?