Given a statement and question, generate the answer to the question such that the answer is contained in the statement.

[EX Q]: statement: upper arm muscles contracting causes a person 's elbow to elongate, question: What muscle contracting causes a person's elbow to elongate?
[EX A]: upper arm

[EX Q]: statement: large animals that roamed the planet were replaced with mammals after their extinction, question: What were large animals that roamed the planet replaced with after their extinction?
[EX A]: mammals

[EX Q]: statement: Male mealybugs have two pairs of wings for flight, question: How many pairs of wings do mealybugs have?
[EX A]:
two pairs