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.

Input: Consider Input: Sentence: Correlation is the comparison of two factors within a population. Question: What is the comparison of two factors within a population?

Output: correlation


Input: Consider Input: Sentence: Dependent variable is the term for the affected factor in an experiment. Question: What is the term for the affected factor in an experiment?

Output: dependent variable


Input: Consider Input: Sentence: The stratosphere is the heat source. Question: What part of the atmosphere is the heat source?


Output: stratosphere