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: All cells need glucose for energy. Question: All cells need what for energy?
Example Output: glucose

Example Input: Sentence: There are four classes of biochemical compounds. Question: How many classes of biochemical compounds are there?
Example Output: four

Example Input: Sentence: The difference between the theoretical half-reaction reduction potential and the actual voltage required is called overpotential. Question: The difference between the theoretical half-reaction reduction potential and the actual voltage required is called what?
Example Output:
overpotential