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.

Ex 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?

Ex Output:
hydroxl groups


Ex Input:
Sentence: Excessive bending stress usually causes fractures on a bone. Question: What usually causes fractures on a bone?

Ex Output:
excessive bending stress


Ex Input:
Sentence: The rising and sinking of these can cause precipitation? Question: The rising and sinking of these can cause precipitation?

Ex Output:

global air currents