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: Property to time kind of variation does a rate measure. Question: What kind of variation does a rate measure?
Example Output: property to time

Example Input: Sentence: The law of superposition is best described by: in undisturbed layers of sedimentary rock, the lowest layers contain the older rocks. Question: Which statement best describes the Law of Superposition?
Example Output: In undisturbed layers of sedimentary rock, the lowest layers contain the older rocks.

Example Input: Sentence: Biomass is an example of a renewable energy resource. Question: Which is an example of a renewable energy resource?
Example Output:
biomass