TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Saturated hydrocarbons hydrocarbons contain only single bonds between carbon atoms.

SOLUTION: What hydrocarbons contain only single bonds between carbon atoms?

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: Characterized by a short lifespan, leukocytes begin with production in the bone marrow under the influence of csfs and interleukins.

SOLUTION:
Characterized by a short lifespan, what begin with production in the bone marrow under the influence of csfs and interleukins?