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.

Fact: young amphibians breathe through gills
What is most like a fish?

Fact: a flower produces pollen and seeds
If a thing has both seeds and reproductive dust, it is?

Fact: an electromagnet contains cylindrical ferrous metal

A common household item that may be a ferrous metal is?