TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Temperature and sky conditions are both used to describe weather.

SOLUTION: Which two observations are both used to describe weather?

PROBLEM: The cytoskeleton holds cell organelles in place within the cytoplasm.

SOLUTION: What part of the cell holds cell organelles in place within the cytoplasm?

PROBLEM: The simplest organic compounds are known as hydrocarbons.

SOLUTION:
The simplest organic compounds are known as what?