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").

Input: Consider Input: Fact1: Soil can be depleted of nutrients., Fact2: Dirt is really misplaced soil., Question: When gardening what can be depleted of nutrients? (A) fertilizer (B) bacteria (C) the plant (D) coal (E) pine (F) the dirt (G) Acids (H) water

Output: F

Input: Consider 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

Output: F

Input: Consider Input: Fact1: Sponges are a source of food for many species of fish., Fact2: Sponges are also keystone species., Question: What are a source of food for many fish species? (A) layers of fat (B) bird species (C) human species (D) keystone species (E) Organic compounds (F) barnacles (G) gastropod shells (H) species of deer
Output: D