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: Deep currents are caused by differences in density at the top and bottom of the ocean. Question: What is caused by differences in density at the top and bottom of the ocean?
Example Output: deep currents

Example Input: Sentence: Solar and wind are still expensive compared to fossil fuels. Question: Solar and wind are still expensive compared to what?
Example Output: fossil fuels

Example Input: Sentence: The orbital is the area where an electron is most likely to be found. Question: What is the area where an electron is most likely to be found called?
Example Output:
orbital