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: Protozoa can be classified on the basis of how they move., Fact2: Paramecium are protozoa, single celled animals., Question: What is a way to categorize paramecium?  (A) the smell (B) coliform (C) the taste (D) canis lupus (E) how they move (F) the length (G) skin color (H) coelenterates
Example Output: E

Example Input: Fact1: smell is used for finding food by some animals, Fact2: Olfaction is the sense of smell., Question: What do some animals use to find food? (A) Echinoids (B) breakfast (C) time travel (D) Energy (E) streams. (F) heat energy (G) nature (H) olfaction
Example Output: H

Example Input: Fact1: Chordates have a complete digestive system and a closed circulatory system., Fact2: Because reptiles are vertebrates, they are chordates., Question: what have complete digestive systems? (A) a fish (B) saliva (C) mammals (D) insects (E) protist (F) barnacles (G) reptiles (H) rabbit
Example Output:
G