instruction:
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").
question:
Fact1: Cells are the basic units of the structure and function of living things., Fact2: Tigers are the largest of the living cats., Question: Cells are the basic units of the structure and function of what? (A) water (B) mammals (C) ice (D) tigers (E) animals (F) humans (G) plants (H) the Sun
answer:
D

question:
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
answer:
G

question:
Fact1: sonar is used to find the location of an object, Fact2: Submarines use sonar to find objects under the water, including other submarines., Question: What can sonar be used to find? (A) animals (B) coastlines (C) waves (D) rays or beams (E) submarines (F) water (G) tsunamis (H) patch reefs
answer:
E