Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Example Input: Cells have four cycles.
Example Output: How many cycles do cells have?

Example Input: The brain is the most complex organ in the human body.
Example Output: What is the most complex organ in the human body?

Example Input: In a position-time graph, the slope of the line represents the velocity.
Example Output:
In a position-time graph, what does the slope of the line represent?