TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Endoscopes are used to explore the body through various orifices or minor incisions.

SOLUTION: Endoscopes are used to explore the body through various orifices or these?

PROBLEM: Some plants have stolons, or stems, that run along the ground and are commonly called runners.

SOLUTION: Some plants have stolons, or stems, that run along the ground and are commonly called what?

PROBLEM: Three many types of mechanical waves are there.

SOLUTION:
How many types of mechanical waves are there?