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

Example Input: Interstitial fluid are all hormones secreted into before entering the circulatory system.
Example Output: Where are all hormones secreted into before entering the circulatory system?

Example Input: Ovulation takes place in the ovary and is part of the menstrual cycle.
Example Output: Ovulation takes place in what organ and is part of the menstrual cycle?

Example Input: Carried through body happens if cancer cells enter the blood stream.
Example Output:
What happens if cancer cells enter the blood stream?