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.

Input: Consider Input: Sentence: The potential of galvanic cell can be used to measure the ph of a solution. Question: The potential of what can be used to measure the ph of a solution?

Output: galvanic cell


Input: Consider Input: Sentence: Protocells do you call the membrane-bounded droplets that have some properties of cells. Question: What do you call the membrane-bounded droplets that have some properties of cells?

Output: protocells


Input: Consider Input: Sentence: Tides is the term for when the water of the ocean slowly rises and falls. Question: What is the term for when the water of the ocean slowly rises and falls?


Output: tides