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: Bivalves feed on plankton and nonliving organic matter., Fact2: Mussels are bivalve mollusks., Question: What feeds on plankton and nonliving organic matter? (A) barnacles (B) mollusks (C) animals (D) the Sun (E) sharks (F) graptolites (G) bacteria (H) dogs
answer:
B


question:
Fact1: if an object is made of a material then that object has the properties of that material, Fact2: Headings include Materials Research, Materials, Ceramic Materials, Composite Materials., Question: if an object is what of a Ceramic then that object has the properties of Ceramic (A) edible (B) combined (C) heat (D) part (E) Joules (F) attached (G) made (H) unique
answer:
G


question:
Fact1: burning fossil fuels increases the carbon in the atmosphere, Fact2: This atmospheric carbon might be contributing to the greenhouse effect., Question: What is contributing to the greenhouse effect? (A) energy of moving objects (B) mining gold (C) Warm air moving into cold air (D) burning fossil fuels (E) acid rain (F) melting ice caps (G) energy usage (H) single-celled organisms
answer:

D