instruction:
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").
question:
Fact1: an egg requires warmth to survive, Fact2: First the frog lays the eggs, then the warmth from the sun makes the eggs hatch into baby tadpoles., Question: what keeps eggs warm? (A) ice (B) hair (C) wool (D) bears (E) fur (F) sun (G) moss (H) sand
answer:
F


question:
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
answer:
E


question:
Fact1: biofuel is used to produce electricity by burning, Fact2: Among the energy sources referred to as biofuels is garbage., Question: Burning garbage can be used  to produce what? (A) warmth (B) heat energy (C) a slowing of global warming (D) gold (E) electricity (F) adding heat (G) mutant protection (H) carbon dioxide
answer:

E