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: a compass is used to navigate oceans, Fact2: And to the east is the Atlantic Ocean., Question: what is a compass used to navigate? (A) density (B) lamphreys (C) marine (D) outer space (E) their speed (F) Antarctica (G) non-magnetic planets (H) the Atlantic

Output: H

Input: Consider Input: Fact1: smell is used for finding food by some animals, Fact2: Olfaction is the sense of smell., Question: What do some animals use to find food? (A) Echinoids (B) breakfast (C) time travel (D) Energy (E) streams. (F) heat energy (G) nature (H) olfaction

Output: H

Input: Consider Input: Fact1: if an object reflects light toward the eye then that object can be seen, Fact2: Light is made of photons ., Question: An object can be seen if it reflects what? (A) Energy. (B) vibrations (C) energy (D) waves (E) sound (F) sun's heat (G) photons (H) sunlight
Output: G