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: a light bulb converts electrical energy into light energy when it is turned on, Fact2: A photon is a packet of light energy., Question: a bulb converts electrical energy into what type of particle? (A) quarks (B) bosons (C) tiny (D) an object (E) waves (F) electrons (G) photon (H) Vibrates
Example Output: G

Example Input: Fact1: moss causes chemical weathering, Fact2: Mosses Mosses are flowerless plants that grow in clumps., Question: What can cause chemical weathering? (A) Calcium carbonate (B) our nearest star (C) global warming (D) sea squirts (E) swamp vegetation (F) single-celled organisms (G) flowerless plants (H) Earthworms
Example Output: G

Example Input: Fact1: a greenhouse is used to protect plants from the cold, Fact2: Plants are grown in greenhouses and protected from wild butterflies., Question: Plants are grown where they are protected from what? (A) the sky (B) disease (C) storms (D) cold air (E) the water (F) the warmth (G) sun's heat (H) the cold
Example Output:
H