TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: In a carbon triple bond, three pairs of electrons are shared.

SOLUTION: In a carbon triple bond, how many pairs of electrons are shared?

PROBLEM: Phototaxis is the term for movement toward light.

SOLUTION: What is the term for movement toward light?

PROBLEM: Mesoderm type of cell layer do flatworms have.

SOLUTION:
What type of cell layer do flatworms have?