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

According to the english system measurement, 4 cups much is equal to 2 pints, 1 quart, and ¼ of a gallon.
According to the english system measurement, how much is equal to 2 pints, 1 quart, and ¼ of a gallon?

Fires, mainly caused by lightning, are a natural disturbance in temperate grasslands.
Fires, mainly caused by what, are a natural disturbance in temperate grasslands?

An excellent solvent that holds heat well and allows hydrogen bonds, water substance has many properties critical to life.

An excellent solvent that holds heat well and allows hydrogen bonds, what substance has many properties critical to life?