TASK DEFINITION: Given a statement and question, generate the answer to the question such that the answer is contained in the statement.
PROBLEM: statement: Detailed observation of stars needs a telescope., question: What type of telescope is required for a detailed observation of stars?

SOLUTION: telescope

PROBLEM: statement: fish secrete a mucous covering over their exterior to help protect from predators and parasites and reduce friction with the liquid substance they live in., question: What do fish secrete over their exterior to help protect against predators and parasites?

SOLUTION: mucous

PROBLEM: statement: stems are green to protect themselves., question: What is green to protect themselves?

SOLUTION:
stems