TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Certain air pollutants form acid liquid when dissolved in water droplets in the air.

SOLUTION: Certain air pollutants form which liquid when dissolved in water droplets in the air?

PROBLEM: When the phosphorus element - whose name means "light bringing" - was first isolated, scientists noted that it glowed in the dark and burned when exposed to air

SOLUTION: When what element - whose name means "light bringing" - was first isolated, scientists noted that it glowed in the dark and burned when exposed to air?

PROBLEM: Most organelles are not found in prokaryotic cells.

SOLUTION:
In which type of cells are most organelles not found?