TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Prostate is the most common type of cancer in adult males.

SOLUTION: What is the most common type of cancer in adult males?

PROBLEM: Fractional crystallization is the separation of compounds on the basis of their solubilities in a given solvent.

SOLUTION: What is the separation of compounds on the basis of their solubilities in a given solvent?

PROBLEM: Monotreme kind of mammalian reproduction is risky for the offspring but not the mother.

SOLUTION:
What kind of mammalian reproduction is risky for the offspring but not the mother?