Given a statement and question, generate the answer to the question such that the answer is contained in the statement.
--------
Question: statement: An animal with an additional joint in its mandible became more mammal-like as it continued to evolve, question: What did an animal with a joint in its mandible become?

Answer: mammal

Question: statement: Tadpoles change into an adult that breathes with lungs and through skin., question: What do tadpoles breathe with?

Answer: lungs and through skin

Question: statement: Butterflies have two pairs of wings for flight., question: What type of wings do Butterflies have?

Answer:
wings