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

Ex Input:
Cancer occurs most often in adults over fifty age.

Ex Output:
Cancer occurs most often in adults over what age?


Ex Input:
The sporophyte stage is the dominant stage of the lifecycle of a fern.

Ex Output:
Which is the dominant stage of the lifecycle of a fern?


Ex Input:
The endocrine system produces most of the hormones that regulate body functions.

Ex Output:

Which human organ system produces most of the hormones that regulate body functions?