TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: The name of film that polyester fibers form is mylar.

SOLUTION: What is the name of film that polyester fibers form?

PROBLEM: If a substance has a ph value greater than 7,that indicates that it is base.

SOLUTION: If a substance has a ph value greater than 7, what does it indicate?

PROBLEM: A cell wall is found in a plant cell but not in an animal cell.

SOLUTION:
Which structure is found in a plant cell but not in an animal cell?