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: melting means changing from a solid into a liquid by adding heat energy, Fact2: When a substance melts, it changes phase from a solid to a liquid by the application of heat., Question: What can be done to a solid by adding heat energy? (A) massive damage (B) phasing the bubbles (C) It expands (D) cooling the center (E) Evaporation (F) changing the phase (G) removing the air (H) Water expanding

Output: F

Input: Consider Input: Fact1: a light bulb is used for seeing in the dark, Fact2: Light is emitted by a light bulb., Question: What is required for seeing? (A) dark (B) sun (C) light (D) wind (E) retina (F) eyes (G) photons (H) copper

Output: C

Input: Consider Input: Fact1: Plants are the major producers in terrestrial biomes., Fact2: Biomes are global ecosystems., Question: plants are the major producers in terrestrial what? (A) important habitats (B) weeds (C) consumers (D) Earth orbiting the Sun (E) oceans (F) our planet (G) global ecosystems (H) vegetation
Output: G