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: Cardiac muscle kind of muscle cells undergo twitch-type contractions with long refractory periods followed by brief relaxation periods, allowing the heart to fill with blood for the next cycle. Question: What kind of muscle cells undergo twitch-type contractions with long refractory periods followed by brief relaxation periods, allowing the heart to fill with blood for the next cycle?
Example Output: cardiac muscle

Example Input: Sentence: Mountain building and earthquakes are some of the responses of rocks when subected to stress. Question: Mountain building and earthquakes are some of the responses of rocks when subected to what?
Example Output: stress

Example Input: Sentence: Absorption is the process by which the substances you consume are taken up by the blood. Question: What is the process by which the substances you consume are taken up by the blood?
Example Output:
absorption