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: Male dogs use pheromones in urine to mark their territory., Fact2: Pheromones are natural aphrodisiacs., Question: What do male dogs use in urine to mark their territory? (A) Natural aphrodisiacs (B) competing for resources (C) Tails (D) Urine cleaner (E) Something coming from a gland (F) Chemical energy (G) an area swollen with pus (H) Chew toys

Ex Output:
A

Ex Input:
Fact1: Veins generally carry deoxygenated blood., Fact2: Arteries and veins are blood vessels., Question: Arteries in the body are able to carry what? (A) saliva (B) breathe (C) water (D) Air (E) oxygen (F) blood (G) veins (H) liquid

Ex Output:
F

Ex Input:
Fact1: when a hurricane moves over land , that hurricane will decrease in strength, Fact2: Hurricanes are extremely dangerous storms., Question: what decreases in strength as the move over land? (A) clouds (B) trucks and cars (C) soil (D) single cell microorganisms (E) 70-75 degrees Fahrenheit (F) detritus and detrital organism (G) extremely dangerous storms (H) weathering

Ex Output:
G