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: You call the movement of a substance from an area of a higher amount toward an area of lower amount diffusion. Question: What do you call the movement of a substance from an area of a higher amount toward an area of lower amount?
Example Output: diffusion

Example Input: Sentence: Gas bubble holes helps pumice float in water. Question: What helps pumice float in water?
Example Output: gas bubble holes

Example Input: Sentence: Primary active transport involves the forcing of a substance into a cell against its concentration gradient. Question: What phenomenon involves the forcing of a substance into a cell against its concentration gradient?
Example Output:
primary active transport