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: Migrants typically travel long distances., Fact2: Migrant birds arrive., Question: What travels long distances? (A) humans (B) jets (C) rocks (D) birds (E) camels (F) cocoons (G) Light (H) eggs

Output: D


Input: Consider Input: Fact1: friction causes an object to lose energy, Fact2: Objects An object can be one of several things., Question: What does friction cause things to lose? (A) heat (B) moisture (C) toughness (D) Energy. (E) traits (F) light (G) energy (H) cartilage

Output: G


Input: Consider Input: Fact1: air pollution can cause the pH of soil to decrease, Fact2: Incinerated mercury pollutes the air., Question: what can cause the ph of soil to decrease? (A) Greenhouse gasses (B) contamination (C) fossil fuels (D) chlorofluorocarbons (E) incinerated mercury (F) harmful substances (G) Greenhouse gases (H) Temperature


Output: E