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

[EX Q]: Bacteria may divide several times an hour.
[EX A]: Bacteria may divide several what an hour?

[EX Q]: One gram of sugar or starch provides 4 calories of energy.
[EX A]: How many calories of energy does one gram of sugar or starch provide?

[EX Q]: When we move down a group of elements on the periodic table, their electronegativity it decreases.
[EX A]:
When we move down a group of elements on the periodic table, what happens to their electronegativity?