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: Organisms cluster around hydrothermal vents in the ocean floor., Fact2: To survive, some organisms living near hydrothermal vents have formed close associations., Question: How is survival ensured around hydrothermal vents? (A) heat produced (B) Eating a lot (C) Reproducing quickly (D) biological diversity (E) vegetation (F) Being in a cluster (G) Staying far apart (H) hydrate their cells

Ex Output:
F


Ex Input:
Fact1: hydropower requires damming a river, Fact2: Another source of energy is hydropower., Question: What is a source of energy? (A) fossil fuels (B) cooking (C) damming a river (D) sleeping (E) napping (F) Electrical energy (G) our nearest star (H) sunlight

Ex Output:
C


Ex Input:
Fact1: ultraviolet light causes sunburn, Fact2: Sunburns are a risk factor for skin cancer., Question: Ultraviolet light can cause what? (A) heat energy (B) skin cancer (C) killing insects (D) chemical changes (E) brain cancer (F) occular cancer (G) lung cancer (H) hypothyroidism

Ex Output:

B