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

Ex Input:
Compression zones is the opposite of rarefaction zones, where air molecules in waves are loosely packed.

Ex Output:
What is the opposite of rarefaction zones, where air molecules in waves are loosely packed?


Ex Input:
Sucrose is formed when a monomer of glucose and a monomer of fructose are joined in a dehydration reaction to form a glycosidic bond.

Ex Output:
What is formed when a monomer of glucose and a monomer of fructose are joined in a dehydration reaction to form a glycosidic bond?


Ex Input:
Distance is defined as the magnitude or size of displacement between two positions.

Ex Output:
What property is defined as the magnitude or size of displacement between two positions?