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

[Q]: It takes about one year for earth to orbit the sun.
[A]: Which of these takes about one year to complete?


[Q]: Incubation is when birds keep their eggs warm while the embryos inside develop.
[A]: What is it called when birds keep their eggs warm while the embryos inside develop?


[Q]: Silver chloride can be used as an antidote for mercury kind of poisoning.
[A]:
Silver chloride can be used as an antidote for which kind of poisoning?