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: Some arthropods have special excretory structures., Fact2: All insects are arthropods., Question: what sometimes has special excretory structures? (A) insects (B) bees (C) a fish (D) barnacles (E) animals (F) carbon (G) feces (H) humans

Ex Output:
A


Ex Input:
Fact1: cooking food requires adding heat energy, Fact2: Heat is essentially the source of energy., Question: Doing what to food requires adding the source of energy? (A) burning (B) burying (C) degrading (D) hydration (E) boiling (F) Light (G) sharing (H) cooking

Ex Output:
H


Ex Input:
Fact1: Digestion is the process of breaking down food into components the body can absorb., Fact2: Food is digested and absorbed in the small intestine., Question: Where is food digested? (A) mouth of rivers (B) layers of fat (C) mouth (D) throat (E) It helps them survive (F) small intestine (G) the environment (H) esophagus

Ex Output:

F