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: knowledge of the stars can be used to navigate, Fact2: Of course, astronomers also study stars., Question: What can be used to navigate? (A) music (B) backbones (C) astrology (D) cilia (E) magic (F) sponges (G) astronomy (H) lamphreys

Output: G


Input: Consider Input: Fact1: a scale is used for measuring weight, Fact2: All weight is in pounds., Question: what is a scale used for measuring? (A) waves (B) hardness (C) SI units (D) measures (E) intensity (F) fat (G) strength (H) pounds

Output: H


Input: Consider Input: Fact1: Vertebrates are animals that have a backbone., Fact2: Human beings are vertebrates., Question: What has a backbone? (A) Humans (B) sharks (C) Jellyfish (D) Snails (E) ferns (F) Hornets (G) people (H) insects


Output: A