Given the task definition, example input & output, solve the new input case.
Given a statement, generate a question such that the answer is contained in that statement.
Example: Neurons deliver electrical impulses to other cells
Output: What do neurons deliver to other cells?
The question generated is valid regarding the information in the statement.

New input case for you: Vinegar changes the color of litmus paper from blue to red
Output:
What color does Vinegar change the color of litmus paper from blue to?