instruction:
Given a statement, generate a question such that the answer is contained in that statement.
question:
Eggs are inseminated during reproduction.
answer:
What is inseminated during reproduction?


question:
Astronomers observe constellations with scopes.
answer:
What do Astronomers observe constellations with?


question:
Triceps tighten causing a person's elbow to straighten.
answer:

What tightens causing a person's elbow to straighten?