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: a light bulb is used for seeing in the dark, Fact2: Conventional light bulbs generate light by heating a filament., Question: What is helpful for seeing in the dark? (A) an electron microscope (B) an electron lens (C) microscope (D) closing the blinds (E) blackouts (F) closing your eyes (G) focusing a lens (H) heating a filament

Output: H


Input: Consider Input: Fact1: having food has a positive impact on an organism 's health, Fact2: Birds and animals eat such food ., Question: What generally has a positive impact on an organism's health? (A) stay warm (B) sex with multiple partners (C) smoking (D) exercise (E) nutrients (F) eating (G) Cooking (H) fasting

Output: F


Input: Consider Input: Fact1: treating water is used to remove harmful substances before drinking, Fact2: Chlorine bleach is ideal for treating water., Question: What can be used to remove harmful substances from water? (A) chlorine bleach (B) Heat energy (C) evaporation (D) oxygen (E) helium (F) Electrical energy (G) hydrogen (H) Calcium carbonate


Output: A