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: Animals produce most of enzymes chemicals, which are needed to synthesize the fatty acids they need. Question: Animals produce most of what chemicals, which are needed to synthesize the fatty acids they need?
Example Output: enzymes

Example Input: Sentence: Winter season causes people to look forward to spring. Question: What season causes people to look forward to spring?
Example Output: winter

Example Input: Sentence: Stringed instruments can help show the relationship between tension and frequencies in strings. Question: Stringed instruments can help show the relationship between tension and what in strings?
Example Output:
frequencies