TASK DEFINITION: Given a statement and question, generate the answer to the question such that the answer is contained in the statement.
PROBLEM: statement: Robins are good at protecting their offspring, question: Who is good at protecting their offspring?

SOLUTION: Robins

PROBLEM: statement: an optical system is used for observing stars by researchers, question: What is used for observing stars by researchers?

SOLUTION: an optical system

PROBLEM: statement: bear teeth are important for absorbing nutrients, question: What are important for absorbing nutrients?

SOLUTION:
bear teeth