TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Hand lens tool should a student use to see the patterns on a small object.

SOLUTION: Which tool should a student use to see the patterns on a small object?

PROBLEM: Producers in an ecosystem generally get their energy from the sun.

SOLUTION: Where do producers in an ecosystem generally get their energy from?

PROBLEM: The general term peptide refers to an amino acid chain of unspecified length.

SOLUTION:
The general term peptide refers to an amino acid chain of what?