instruction:
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").
question:
Fact1: Tunicates reproduce sexually., Fact2: Sea squirts are the best known tunicates., Question: what reproduces sexually? (A) orchids (B) mountains (C) viruses (D) humans (E) sea squirts (F) Most plants (G) h2o (H) insects
answer:
E

question:
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
answer:
G

question:
Fact1: Most people can survive only a few days without water., Fact2: Without an ample supply of water to drink, people become dehydrated., Question: How long can people survive while dehydrated? (A) A few days (B) An hour (C) the environment (D) sweating (E) Forever (F) A few weeks (G) dangerous (H) Winter
answer:
A