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 speed of sound depends on medium. Question: The speed of sound depends on what?
Example Output: medium

Example Input: Sentence: Carbonic acid can dissociate into hydrogen carbonate ions and protons. Question: Carbonic acid can dissociate into hydrogen carbonate ions and what?
Example Output: protons

Example Input: Sentence: The axis of the plant has a root end and a shoot end. Question: What part of the plant has a root end and a shoot end?
Example Output:
axis