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: Consider Input: Fact1: Ancestors of hagfish are thought to have been the earliest vertebrates., Fact2: Property of ancestors and forefathers can only be legally inherited by sons., Question: Forefathers of what kind of fish are thought to be the earliest vertebrates? (A) hagfish (B) Pelycosaur (C) fish (D) angiosperm (E) adult (F) Therapsids (G) marine (H) aquatic

Output: A


Input: Consider Input: Fact1: electricity is used as an energy source by electrical devices, Fact2: Electrical fields result from electrical devices and televisions., Question: What is used as an energy source by television? (A) electricity (B) light (C) our nearest star (D) air (E) energy (F) satellites (G) photons (H) rocks

Output: A


Input: Consider Input: Fact1: a long tail can be used to move through water by an animal, Fact2: Thus swimming is defined as a special kind of moving, namely moving in or through water., Question: A long tail can be used to do what? (A) courtship (B) Electrical energy (C) gather meat (D) hide from predators (E) swim through water (F) it keeps an organism warm (G) reproduce (H) build shelter


Output: E