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: plasma is formed by electrons separating from atoms in stars, Fact2: Plasma exists inside stars and in interstellar gases., Question: What is formed by electrons separating from interstellar gases? (A) an object (B) Energy. (C) proteins (D) led lights (E) air (F) light (G) plasma (H) dust

Ex Output:
G


Ex Input:
Fact1: shelter is used for protection by animals against weather, Fact2: Caves or rock overhangs provide shelter., Question: What do animals find protection from when using rock overhangs? (A) sun's heat (B) insects (C) weather (D) erosion (E) rivers (F) bats (G) wind (H) the sun

Ex Output:
C


Ex Input:
Fact1: Some precipitation that falls on land may soak into the ground, becoming groundwater., Fact2: Rain is only one kind of precipitation., Question: What may soak into the ground, becoming groundwater? (A) h2o (B) wells (C) H 2 O (D) rain (E) H20 (F) blood (G) dust (H) river

Ex Output:

D