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

Example Input: Hydrocarbons compounds, which serve as fuels and are used in manufacturing, are called the driving force of western civilization.
Example Output: What compounds, which serve as fuels and are used in manufacturing, are called the driving force of western civilization?

Example Input: Constructive forces type of forces are involved when deposited rock forms deltas or barrier islands.
Example Output: What type of forces are involved when deposited rock forms deltas or barrier islands?

Example Input: Zero is the net force acting on an object when two equal forces are applied from opposite directions.
Example Output:
What is the net force acting on an object when two equal forces are applied from opposite directions?