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: erosion causes a river to become deeper and wider, Fact2: Weathering and erosion continue to shape it today., Question: Weathering causes what to become deeper and wider? (A) a landslide (B) Sediment (C) a mountain (D) a volcano (E) soils (F) rock (G) flooding (H) a river

Output: H


Input: Consider Input: Fact1: a greenhouse is used to protect plants by keeping them warm, Fact2: Flower size varies by plant., Question: How does a greenhouse protect flowers? (A) keeps them away from the sun (B) keeps them warm (C) keeps them out of soil (D) an external framework (E) it needs them (F) keeps them cold (G) rays or beams (H) by indirect light

Output: B


Input: Consider Input: Fact1: producing thrust causes something to move, Fact2: Impulsion is thrust, the release of stored energy into engagement., Question: Producing impulsion causes an object to do what? (A) It expands (B) heat energy (C) heating liquids (D) imbalanced (E) sweating (F) squeeze (G) reflecting light (H) It will move.


Output: H