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: Period is the time interval required for one complete wave to pass a point called. Question: What is the time interval required for one complete wave to pass a point called?
Example Output: period

Example Input: Sentence: Lichens are not a single organism, but rather an example of a mutualism. Question: Lichens are not a single organism, but rather an example of a what?
Example Output: mutualism

Example Input: Sentence: Human actions is responsible for the extinction of hundreds of species of birds. Question: Which single most factor is responsible for the extinction of hundreds of species of birds?
Example Output:
human actions