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: Organs of excretion make up the excretory system., Fact2: Digestive system Excretory system removes waste and toxic substances from blood., Question: What removes waste and toxic substances from the blood? (A) Special disposal (B) Something coming from a gland (C) aqueous solution (D) Veins and arteries. (E) digestive system organs (F) that material's properties (G) Something that causes allergies (H) microorganisms

Ex Output:
E


Ex Input:
Fact1: Air pollution harms the respiratory and circulatory systems., Fact2: Cars are a significant source of air pollution., Question: What harms the respiratory and circulatory systems? (A) oil (B) rain (C) sulfur (D) cars (E) tires (F) coal (G) tar (H) bicycles

Ex Output:
D


Ex Input:
Fact1: an animal requires nutrients to grow and heal, Fact2: Animals acquire nutrients by ingestion., Question: An animal requires ingestion to do what? (A) aerobic capacity (B) die (C) water conservation (D) drinking (E) grow and heal (F) motility (G) howl (H) hear

Ex Output:

E