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: Veins generally carry deoxygenated blood., Fact2: Arteries and veins are blood vessels., Question: what generally carries deoxygenated blood? (A) blood vessels (B) animals (C) layers of fat (D) mammals (E) critical organs (F) an organism's body (G) elephants (H) athletes
Example Output: A

Example Input: Fact1: gravity causes objects that have mass to be pulled down on a planet, Fact2: Rocks have mass., Question: What does gravity cause to be pulled down on a planet? (A) matter (B) heat (C) earth (D) solutes (E) oceans (F) Rocks (G) people (H) Lift
Example Output: F

Example Input: Fact1: Earth 's tilt on its rotating axis causes seasons to change, Fact2: Because of the tilt of the earth, the suns rays are strongest near the equator., Question: the suns rays are strongest near the what for the same reason the seasons change (A) weather (B) surface (C) equator (D) distance (E) Joules (F) waves (G) climate (H) heat
Example Output:
C