Instructions: In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
Input: Fact1: Playing is one way mammals and other animals learn how to behave., Fact2: Exercise is fun if it is also play., Question: What can teach animals how to behave? (A) adding heat (B) humans (C) fossil fuels (D) A computer (E) nerves (F) people (G) irradiation (H) exercise
Output:
H