Given a fact, create a question that can be answered using the fact. Construct the question such that it is unambiguous, has a unique answer and the answer can be given using the fact.

Q: Fact: white blood cell destroys pathogens in the body

A: How can you get your hands on white blood cells?
****
Q: Fact: melting is when solids are heated above their melting point

A: A plastic toy reduced to a puddle was left on a?
****
Q: Fact: amphibians undergo metamorphosis

A:
When a frog is born, it has tiny gills so that it can breathe underwater, even though in adulthood it will?
****