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

Saturated hydrocarbons hydrocarbons contain only single bonds between carbon atoms.
What hydrocarbons contain only single bonds between carbon atoms?

The energy stored in the organic molecules of food ultimately comes from the sun.
The energy stored in the organic molecules of food ultimately comes from where?

Golden eagles living species of bird is considered the  largest of the raptors.

What living species of bird is considered the  largest of the raptors?