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: Plants that shed their leaves seasonally each year are called deciduous plants., Fact2: Shade trees can be deciduous., Question: What can shed their leaves? (A) rabbit (B) Power plants (C) insects (D) swamp vegetation (E) mammals (F) Shade trees (G) animals (H) Most plants
answer:
F

question:
Fact1: volcanic ash in the atmosphere decreases the temperature by blocking the sun, Fact2: Ash clouds are a particular problem for aircraft., Question: What are particular problems for aircraft in the atmosphere? (A) transportation (B) clog airways (C) extremely low humidity (D) volcanic clouds (E) feedback mechanisms (F) negative feedback (G) gas spreads in the air (H) very complex
answer:
D

question:
Fact1: a black hole is formed by a high-mass star collapses, Fact2: Stars are on an outermost celestial sphere., Question: What is formed when a high mass celestial body collapses? (A) rays or beams (B) Calcium carbonate (C) It gets heated up (D) fossil fuels (E) scattered light (F) layers of fat (G) a black hole (H) heating liquids
answer:
G