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: recycling has a positive impact on the environment, Fact2: Steel is a recycled and recyclable product., Question: What has a positive impact on the environment? (A) animals (B) bushes (C) energy (D) peachleaf willow (E) oysters (F) using steel (G) Solar energy (H) Green beans

Ex Output:
F


Ex Input:
Fact1: cooking food requires adding heat energy, Fact2: Heat is essentially the source of energy., Question: Doing what to food requires adding the source of energy? (A) burning (B) burying (C) degrading (D) hydration (E) boiling (F) Light (G) sharing (H) cooking

Ex Output:
H


Ex Input:
Fact1: the surface of a beach is formed by mechanical weathering, Fact2: Most beaches are of white coral sand., Question: What action produces much of the sand from coral? (A) reef building (B) radioactive decay (C) mechanical waves (D) glass blowing (E) It used to be covered by water (F) The area was once underwater (G) Mechanical weathering (H) By coral exoskeletons

Ex Output:

G