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: a light bulb converts electrical energy into light energy when it is turned on, Fact2: A photon is a packet of light energy., Question: a bulb converts electrical energy into what type of particle? (A) quarks (B) bosons (C) tiny (D) an object (E) waves (F) electrons (G) photon (H) Vibrates

Ex Output:
G

Ex Input:
Fact1: condensing means changing from a gas into a liquid by reducing heat energy, Fact2: When a gas condenses to form a liquid it absorbs heat., Question: What does reducing heat change gas into? (A) water (B) solutes (C) energy (D) rock (E) sweating (F) tube (G) liquid (H) freon

Ex Output:
G

Ex Input:
Fact1: Carbon monoxide is a gas produced by furnaces and other devices that burn fuel., Fact2: Excessive accumulation build-up of carbon monoxide can cause suffocation., Question: What can gas furnaces cause? (A) matter vibrating (B) Pollution (C) rain (D) Stale air (E) condensation (F) emissions (G) suffocation (H) friction

Ex Output:
G