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").

Example Input: Fact1: Carbon cycles quickly between organisms and the atmosphere., Fact2: Water, carbon dioxide, and nitrogen are all needed by living things., Question: What is needed by living things? (A) hate (B) sunlight (C) Chemical energy (D) pain (E) love (F) hydration (G) The atmosphere (H) Energy.
Example Output: G

Example Input: Fact1: an aquatic animal requires great amounts of water to survive, Fact2: Beavers are primarily aquatic animals., Question: what requires great amounts of water to survive (A) sunlight (B) beavers (C) octopus (D) mussels (E) trout (F) carbon (G) oxygen (H) amphibians
Example Output: B

Example Input: Fact1: Biodiversity generally increases from the poles to the equator., Fact2: Biodiversity and ecosystems are complex systems., Question: What generally increases from the poles to the equator? (A) kinetic energy (B) Energy. (C) warmth (D) voltage (E) sun's heat (F) temperature (G) complexity (H) sunlight
Example Output:
G