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

[EX Q]: Transparent matter transmits light without scattering it.
[EX A]: What type of matter transmits light without scattering it?

[EX Q]: Water plus other substances makes a(n) solution.
[EX A]: Water plus other substances makes what?

[EX Q]: The cardiovascular system in the human body consists of the heart, a network of blood vessels, and blood.
[EX A]:
Which system in the human body consists of the heart, a network of blood vessels, and blood?