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

Ex Input:
You call a substance that is not an acid or a base neutral.

Ex Output:
What do you call a substance that is not an acid or a base?


Ex Input:
It takes about one year for earth to orbit the sun.

Ex Output:
Which of these takes about one year to complete?


Ex Input:
Single-celled are yeasts.

Ex Output:

What kind of organisms are yeasts?