Given a statement and question, generate the answer to the question such that the answer is contained in the statement.
--------
Question: statement: Some species of reptiles can go several weeks between eating food., question: How long can reptiles go between eating food?

Answer: several weeks


Question: statement: Pedigrees are useful tools for studying heredity., question: Pedigrees are useful tools for studying what?

Answer: heredity


Question: statement: Some butterflies can use their colors as protection from predators., question: What type of butterflies can use their colors to protect against predators?

Answer:
butterflies