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: fog is formed by water vapor condensing in the air, Fact2: Water vapor rises into the atmosphere., Question: what does the atmosphere do before turning into fog (A) adapt (B) rest (C) Rise (D) fall (E) cooled (F) snow (G) swirl (H) Lift

Output: C

Input: Consider Input: Fact1: Climate is generally described in terms of temperature and moisture., Fact2: Climate refers to weather over a long period of time., Question: What is generally described in terms of temperature and moisture? (A) lamphreys (B) light (C) color (D) weather (E) Honey (F) ecosystems (G) Mohs (H) flavor
Output: D