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]: Blood is made up of red blood cells, white blood cells, platelets, and plasma.
[A]: Blood is made up of red blood cells, white blood cells, platelets, and what else?


[Q]: A cell wall is not present in animal cells.
[A]:
Which of the following structures is not present in animal cells?