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: matter vibrating can cause sound, Fact2: Thus, sound is a wave in air ., Question: what can matter vibrating cause? (A) Pollution (B) energy (C) Relieve pain (D) kinetic energy (E) wave in air (F) Energy. (G) murmur (H) Greenhouse gases

Ex Output:
E


Ex Input:
Fact1: a light bulb converts electrical energy into light energy when it is turned on, Fact2: Light bulbs are rated in Watts., Question: How is converted energy into light energy rated? (A) energy (B) unique (C) heat (D) good (E) watts (F) parsec (G) kilojoule (H) kinetic energy

Ex Output:
E


Ex Input:
Fact1: a spider web is used to capture food by spiders, Fact2: Web spinning spiders spin webs to catch insects., Question: what do spiders catch? (A) insects (B) hairs (C) rain (D) lions (E) protozoa (F) tiny hairs (G) lamphreys (H) cnidarians

Ex Output:

A