TASK DEFINITION: In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.
PROBLEM: Sentence: The decayed remains of living organisms is called humus. Question: What is the decayed remains of living organisms called?

SOLUTION: humus

PROBLEM: Sentence: Combustion reaction occurs when a substance reacts quickly with oxygen. Question: What occurs when a substance reacts quickly with oxygen?

SOLUTION: combustion reaction

PROBLEM: Sentence: Air pollution causes acid rain, ozone depletion, and global warming. Question: What causes acid rain, ozone depletion, and global warming?

SOLUTION:
air pollution