TASK DEFINITION: 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.
PROBLEM: 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?

SOLUTION: galvanic cell

PROBLEM: Sentence: There are four many visual clues to indicate a chemical reaction. Question: There are how many visual clues to indicate a chemical reaction?

SOLUTION: four

PROBLEM: Sentence: Solid takes neither the shape nor the volume of its container. Question: What state of matter takes neither the shape nor the volume of its container?

SOLUTION:
solid