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

[EX Q]: statement: a freezer removes thermal energy, question: What removes thermal energy?
[EX A]: a freezer

[EX Q]: statement: a map of the types of blood proteins in the family tree is useful for studying inheritance patterns, question: What is a map of blood proteins useful for studying?
[EX A]: inheritance patterns

[EX Q]: statement: eagle egg shells are natural., question: What type of egg shells are natural?
[EX A]:
eagle