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: They are not transcribed happens to structural genes in the presence of tryptophan. Question: What happens to structural genes in the presence of tryptophan?
Example Output: they are not transcribed

Example Input: Sentence: Soluble metal hydroxides is produced by the reaction of metal oxide with water. Question: What is produced by the reaction of metal oxide with water?
Example Output: soluble metal hydroxides

Example Input: Sentence: A perfectly inelastic collision reduces internal kinetic energy to the minimum it can have while still conserving momentum. Question: A perfectly inelastic collision reduces internal kinetic energy to the minimum it can have while still conserving what?
Example Output:
momentum