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: mechanical weathering is when rocks are broken down by mechanical means, Fact2: Water is a mechanical weathering force., Question: What  weathers rocks? (A) soil (B) streams (C) a delta (D) calcite (E) erosion (F) water (G) grass (H) the sun

Output: F


Input: Consider Input: Fact1: a compass is used to navigate oceans, Fact2: And to the east is the Atlantic Ocean., Question: what is a compass used to navigate? (A) density (B) lamphreys (C) marine (D) outer space (E) their speed (F) Antarctica (G) non-magnetic planets (H) the Atlantic

Output: H


Input: Consider Input: Fact1: friction causes the speed of an object to decrease, Fact2: Friction is dependant on the texture of both surfaces., Question: What can cause the speed of an object to decrease? (A) more propulsion (B) a tree falling (C) degrees Celsius (D) degrees celcius (E) texture of the surfaces (F) inertia (G) Electrical energy (H) sunlight


Output: E