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").

Ex 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

Ex Output:
G


Ex Input:
Fact1: Some arthropods have special excretory structures., Fact2: All insects are arthropods., Question: what sometimes has special excretory structures? (A) insects (B) bees (C) a fish (D) barnacles (E) animals (F) carbon (G) feces (H) humans

Ex Output:
A


Ex Input:
Fact1: a rubber band snapping causes the particles in the rubber band to vibrate, Fact2: Of course, pianos and other instruments produce damped, forced vibrations., Question: A rubber band snapping acts like what? (A) electromagnetic energy (B) wavelengths and photons (C) Relieve pain (D) electrically (E) Electrical energy (F) flow of electrons (G) rays or beams (H) A piano making sound

Ex Output:

H