Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

A white dog has a puppy with white fur statement is an example of an inherited trait in a living thing.
Which statement is an example of an inherited trait in a living thing?

Control rods play an important role in the modulation of the nuclear chain reaction.
What play an important role in the modulation of the nuclear chain reaction?

Prokaryotic cells have a cell wall outside their plasma membrane.
Prokaryotic cells have what structure outside their plasma membrane?