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: hydropower requires damming a river, Fact2: Hoover Dam, the first dam on the Colorado River below Grand Canyon, was built between 1931 and 1935., Question: Which of these produces hydropower? (A) deuterostomes (B) Wind Turbines (C) power stations (D) Suez Canal (E) trout (F) Old Faithful Geyser (G) Hoover Dam (H) stations

Output: G


Input: Consider Input: Fact1: Organisms cluster around hydrothermal vents in the ocean floor., Fact2: To survive, some organisms living near hydrothermal vents have formed close associations., Question: How is survival ensured around hydrothermal vents? (A) heat produced (B) Eating a lot (C) Reproducing quickly (D) biological diversity (E) vegetation (F) Being in a cluster (G) Staying far apart (H) hydrate their cells

Output: F


Input: Consider Input: Fact1: a fire requires oxygen to burn, Fact2: Oxygen has  eight protons and eight electrons., Question: What does a fire require to burn? (A) A transportation fuel (B) Something with exactly 2 protons (C) chemical to mechanical energy (D) Something with exactly eight protons (E) Something with exactly 1 proton (F) Burning fuel and air (G) igniting fuel and oxidiser (H) Something with 7 protons


Output: D