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.

[EX Q]: 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?
[EX A]: galvanic cell

[EX Q]: Sentence: Fuel is algae easier to covert into that corn is currently used for. Question: What is algae easier to covert into that corn is currently used for?
[EX A]: fuel

[EX Q]: Sentence: Mass matter reacts, there can be what that comes from nowhere and is unaccounted for. Question: When matter reacts, there can be what that comes from nowhere and is unaccounted for?
[EX A]:
mass