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").
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Question: Fact1: energy is used for heating a building by a heating system, Fact2: Faculty offices are also in the building., Question: What contains energy to raise the temperture of an office? (A) chemical messengers (B) peachleaf willow (C) deoxyribonucleic acid (D) cooling system (E) swimming pool (F) heating system (G) gym (H) organic molecules

Answer: F

Question: Fact1: Mollusks reproduce sexually., Fact2: Mollusks are the dominant invertebrate., Question: what reproduces sexually? (A) A compound that donates proton (B) spread flower seeds (C) They have webbed feet (D) Plant reproduction (E) By wind and rain (F) passenger pigeons (G) the dominant invertebrate (H) Something found in San Francisco

Answer: G

Question: Fact1: heavy rains cause flooding, Fact2: Heavy rains can cause erosion., Question: Which natural process can cause erosion? (A) rivers (B) Earthquakes (C) ice wedging (D) Flooding (E) coastlines (F) Tornados (G) wind (H) Volcanos

Answer:
D