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

Example Input: A moose eats a plant is an example of a living thing that depends on another living thing to survive.
Example Output: Which statement best identifies a living thing that depends on another living thing to survive?

Example Input: Although they differ vastly in hardness, pencil lead and diamonds both contain carbon.
Example Output: Although they differ vastly in hardness, pencil lead and diamonds both contain what element?

Example Input: The light-sensing cells in the retina are called rods and cones.
Example Output:
The light-sensing cells in the retina are called rods and what else?