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

Example Input: A covalent network solid is a compound in which all of the atoms are connected to one another by covalent bonds.
Example Output: What is a compound in which all of the atoms are connected to one another by covalent bonds?

Example Input: Ovulation takes place in the ovary and is part of the menstrual cycle.
Example Output: Ovulation takes place in what organ and is part of the menstrual cycle?

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?