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: a rainbow is formed by refraction of light by splitting light into all different colors. Question: Marbles in the right light make?
rainbows

Fact: a living thing requires nutrients to grow. Question: A thing with cells is going to expand, but first requires?
nourishment

Fact: echolocation is when some animals detect objects by hearing echoes by emitting sound. Question: Echolocation is when animals detect objects by hearing echos using what?

screeching