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: One of the main features all vetebrates have in common is a backbone. Question: One of the main features all vetebrates have in common is what?
Example Output: backbone

Example Input: Sentence: Tributaries is the term for small streams. Question: What is the term for small streams?
Example Output: tributaries

Example Input: Sentence: Hot magma beneath the surface mixes with water and forms gas. Question: Hot magma beneath the surface mixes with water and forms what?
Example Output:
gas