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: wind and rain cause erosion, Fact2: Water, in the form of rain, is the most effective agent of erosion., Question: What causes erosion the most? (A) streams (B) motion (C) LEDs (D) water (E) Roads (F) rivers (G) Winter (H) wind

Ex Output:
D

Ex Input:
Fact1: an animal requires stamina to succeed at physical activities, Fact2: Sheep hunting is a physically demanding hunt., Question: What activity would an animal need stamina for? (A) courtship (B) Movement (C) Incubating Eggs (D) four limbs (E) growth (F) Hunting (G) Hibernation (H) Using camoflauge

Ex Output:
F

Ex Input:
Fact1: condensation causes clouds to form, Fact2: Rainy clouds cause rain, and excess water vapor from clouds is the basis of rainbows., Question: What can be caused by condensation? (A) rain (B) wind (C) gills (D) Gases (E) drought (F) heat (G) breeze (H) gas

Ex Output:
A