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: lungs are used for breathing air by land animals, Fact2: Elephants are the largest animals on land., Question: What uses lungs for breathing air? (A) rocks (B) some mammals (C) Frogs (D) monotremes (E) humans (F) bacteria (G) elephants (H) oak trees

Ex Output:
G


Ex 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

Ex Output:
H


Ex Input:
Fact1: microscope is used to see small things by biologists by making them appear bigger, Fact2: Bacteria are very small., Question: What do biologists use microscopes for? (A) rays or beams (B) Deoxyribonucleicacid (C) to listen for bacteria (D) An object is seen (E) mutations (F) to record data (G) to see quarks (H) to see bacteria

Ex Output:

H