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.

Example Input: Sentence: Oxygen has increased in the atmosphere throughout the history of the earth. Question: What has increased in the atmosphere throughout the history of the earth?
Example Output: oxygen

Example Input: Sentence: The chains in cellulose stack in parallel rows held together by hydrogen bonds between hydroxl groups groups. Question: The chains in cellulose stack in parallel rows held together by hydrogen bonds between which groups?
Example Output: hydroxl groups

Example Input: Sentence: The tilt of earth on its axis is one factor that contributes to seasons occurring in new york state. Question: What is one factor that contributes to seasons occurring in New York State?
Example Output:
the tilt of Earth on its axis