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

[Q]: Three many families are known quarks divided into.
[A]: How many families are known quarks divided into?


[Q]: Standard measurements in science are very important so that we can compare experimental data from one lab to another and make sure we all are talking about the same thing.
[A]: What in science are very important so that we can compare experimental data from one lab to another and make sure we all are talking about the same thing?


[Q]: When placed in direct sunlight, a black sweater will absorb the most visible light energy.
[A]:
When placed in direct sunlight, which object will absorb the most visible light energy?