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: high pressure systems cause clear weather, Fact2: Weather Clear weather usually means good visibility., Question: what does a high pressure system cause? (A) hyperthyroidism (B) lowered energy cost (C) harmful substances (D) Heart rate (E) good visibility (F) It gets heated up (G) Pollution (H) rainfall

Ex Output:
E


Ex Input:
Fact1: Bone provides protection for soft tissues and internal organs., Fact2: Antlers are true bones and are composed of calcium and phosphorous., Question: What provides protection for soft tissues and internal organs? (A) bacteria (B) Veins and arteries. (C) Fully cooking the oysters (D) layers of fat (E) calcium and phosphorous (F) water (G) peachleaf willow (H) the trachea

Ex Output:
E


Ex Input:
Fact1: Mating is generally preceded by courtship., Fact2: Males and females mix only to mate., Question: What engages in courtship? (A) Males and females (B) elephants (C) fur seals (D) it keeps an organism warm (E) science (F) Males and males (G) books (H) warm-blooded

Ex Output:

A