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: 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
Example Output: H

Example Input: Fact1: Mammals have a layer of fat under the skin to help insulate the body., Fact2: Harbor seals, like sea lions, have evolved to utilize a layer of fat called blubber., Question: How do sea lions keep warm? (A) protected (B) warm (C) Swimming fast (D) Sleeping (E) hydration (F) Blubber (G) four limbs (H) Eating a lot of fish
Example Output: F

Example Input: Fact1: a drought can change the color of an environment from green to brown, Fact2: Too little rain causes a drought., Question: What can change the color of an environment from green to brown? (A) harmful substances (B) clouds (C) Greenhouse gasses (D) blizzards (E) deforestation (F) Greenhouse gases (G) blue skies (H) too little rain
Example Output:
H