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: The potential of galvanic cell can be used to measure the ph of a solution. Question: The potential of what can be used to measure the ph of a solution?
Example Output: galvanic cell

Example Input: Sentence: Humans possess a(n) endoskeleton. Question: Of the three types of skeleton designs - hydrostatic skeletons, exoskeletons, and endoskeletons - which do humans possess?
Example Output: endoskeleton

Example Input: Sentence: A prism helps people understand what makes up white light. Question: Which object helps people understand what makes up white light?
Example Output:
Prism