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: Most salamanders use their sense of smell to find a mate., Fact2: Like frogs, salamanders are amphibians., Question: What uses its sense of smell to find a mate? (A) the Sun (B) peachleaf willow (C) rocks (D) fur seals (E) warm-blooded (F) trees (G) passenger pigeons (H) some amphibians
Example Output: H

Example Input: Fact1: Viruses are so small that they can be seen only with an electron microscope., Fact2: Electron microscope is developed in Germany., Question: viruses are so small that they can be seen only with a device developed where? (A) A computer (B) sunlight (C) Light (D) germany (E) retina (F) at home (G) canada (H) taiwan
Example Output: D

Example Input: Fact1: a car engine usually converts gasoline into motion and heat through combustion, Fact2: Internal combustion engines create friction., Question: Car engines convert gasoline into what? (A) light (B) Energy. (C) heat (D) fuel (E) color (F) electricity (G) friction (H) sound
Example Output:
G