TASK DEFINITION: Given a statement and question, generate the answer to the question such that the answer is contained in the statement.
PROBLEM: 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?

SOLUTION: mammal

PROBLEM: statement: Lineages are useful tools for predicting, question: What are useful tools for predicting?

SOLUTION: Lineages

PROBLEM: statement: male gametes pass out of the body through the penis, question: What do male gametes pass through?

SOLUTION:
penis