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: Ants communicate with chemicals called pheromones., Fact2: Ants use receptors on their antennae to follow recruitment pheromone trails., Question: What do ants use to communicate? (A) nerves (B) heat energy (C) sound (D) binary code (E) light energy (F) Antennae. (G) megaphones (H) hand signals
Example Output: F

Example Input: Fact1: Some pelycosaurs gave rise to a group of animals called therapsids., Fact2: Pelycosaurs are an important lineage preserved in the fossil record., Question: How do we know the lineage of therapsids? (A) Laboratory (B) dinosaurs (C) prokaryotic cells (D) some anthozoans (E) fossil record (F) oral tradition (G) polygenic (H) calibrated
Example Output: E

Example Input: Fact1: unequal heating of Earth 's surface by the Sun causes global wind patterns, Fact2: Unequal absorption of radiation causes unequal heating of the earth's surface., Question: Unequal absorption of radiation on the earth's surface causes what? (A) electromagnetic energy (B) global travel patterns (C) fissures of hot, acidic water (D) Temperature (E) global migration patterns (F) global rain patterns (G) global wind patterns (H) Greenhouse gasses
Example Output:
G