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: 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

Ex Output:
F


Ex Input:
Fact1: All chemical reactions require activation energy to get started., Fact2: Chemical changes are a result of chemical reactions., Question: What is required before a chemical change? (A) kinetic energy (B) energy usage (C) activation push (D) activation energy (E) activation switch (F) activation power (G) Burning fuel and air (H) Evaporation

Ex Output:
D


Ex Input:
Fact1: a pan is used for cooking food by heating food in it on a stove, Fact2: Food, like chicken and potatoes are recommended., Question: Chicken and potatoes can be cooked in a pan on what? (A) a paper towel (B) on another chicken (C) a stove (D) in the freezer (E) less water (F) heat (G) plates (H) loose soil

Ex Output:

C