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").

Ex 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

Ex Output:
F


Ex Input:
Fact1: Mollusks reproduce sexually., Fact2: Mollusks are the dominant invertebrate., Question: what reproduces sexually? (A) A compound that donates proton (B) spread flower seeds (C) They have webbed feet (D) Plant reproduction (E) By wind and rain (F) passenger pigeons (G) the dominant invertebrate (H) Something found in San Francisco

Ex Output:
G


Ex Input:
Fact1: if an object is kicked then force is exerted on that object, Fact2: Control boxes are objects., Question: what has forced extered on it if kicked? (A) animals (B) mussels (C) control boxes (D) heat energy (E) energy barrier (F) a hydraulic system (G) activation energy (H) kinetic energy

Ex Output:

C