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

[EX Q]: When gas particles heat up, pressure increase.
[EX A]: Does pressure increase or decrease when gas particles heat up?

[EX Q]: Cloudy conditions will most likely result from a low-pressure weather system.
[EX A]: Which will most likely result from a low-pressure weather system?

[EX Q]: Nitrogen has 5 valence electrons.
[EX A]:
How many valence electrons does nitrogen have?