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: Precipitation increases moisture., Fact2: Rain is liquid precipitation., Question: what increases moisture? (A) density (B) the sun (C) wind (D) rain (E) Honey (F) 17 (G) droughts (H) Type O

Ex Output:
D


Ex Input:
Fact1: pathogens can cause disease, Fact2: Mad Cow disease is a concern., Question: What can cause Mad Cow? (A) Pollution (B) bacteria (C) cows (D) horses (E) illness (F) pathogens (G) influenza (H) chickenpox

Ex Output:
F


Ex Input:
Fact1: burning wood is used to produce heat, Fact2: Heating and air conditioning keep the building comfortable regardless of the temperature outside., Question: burning wood is used to keep buildings what? (A) comfortable (B) closed (C) homogenous (D) warmth (E) smokey (F) cold (G) staying warm (H) freezing

Ex Output:

A