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: Diffusion is the process in which a substance naturally moves from an area of higher to lower concentration. Question: What is the process in which a substance naturally moves from an area of higher to lower concentration called?
Example Output: diffusion

Example Input: Sentence: A carbon atom with 6 protons and 8 neutrons is more specifically known as carbon 14. Question: A carbon atom with 6 protons and 8 neutrons is more specifically known as?
Example Output: carbon 14

Example Input: Sentence: Lead is a soft, malleable, and corrosion resistant material called. Question: What is a soft, malleable, and corrosion resistant material called?
Example Output:
lead