In this task, you are given a fact statement and question based on the fact. Your task is to generate the correct answer for the question. The answer needs to be generated using the context fact statement.

Fact: An example of a chemical change is acid breaking down substances. Question: Drinking cola daily removes layers from the surface of?
enamel on molars

Fact: tuna eat fish. Question: One of tunas favorite prey is the?
sardine

Fact: a mammal usually nurses its offspring. Question: A mammal usually nurses its what?

younglings