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: an earthquake causes the ground to shake, Fact2: Seismic waves are produced by earthquakes., Question: Seismic waves cause what to shake? (A) earth (B) body water (C) wind (D) tremors (E) sunlight (F) the ground (G) Sediment (H) rocks

Output: F


Input: Consider Input: Fact1: Some arthropods have special excretory structures., Fact2: All insects are arthropods., Question: what sometimes has special excretory structures? (A) insects (B) bees (C) a fish (D) barnacles (E) animals (F) carbon (G) feces (H) humans

Output: A


Input: Consider Input: Fact1: Mutations are essential for evolution to occur., Fact2: Evolution Change through time., Question: What is needed for changes to occur? (A) exercise (B) mutations (C) growth (D) healthy animals (E) environment (F) evaporation (G) Exfoliation (H) births


Output: B