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: Primary pollutants enter the air directly. Question: What type of pollutants enter the air directly?

SOLUTION: primary

PROBLEM: Sentence: At the poles are temperatures the lowest. Question: Where are temperatures the lowest?

SOLUTION: at the poles

PROBLEM: Sentence: Large mutations is essential for forming new genes. Question: What is essential for forming new genes?

SOLUTION:
large mutations