Given a statement, generate a question such that the answer is contained in that statement.

Example Input: Interphase is when DNA is copied.
Example Output: When DNA is copied?

Example Input: Experiments are often executed in a science facility.
Example Output: Experiments are often executed in what?

Example Input: Acids that taste vinegary will change a litmus paper red.
Example Output:
What color of paper will acid that taste vinegary change?