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

Ex Input:
Cells are the  basic building blocks of the human body.

Ex Output:
What are the  basic building blocks of the human body?


Ex Input:
Collision frequency is greater for homogeneous category of catalysts, which also tend to be more sensitive to temperature and more 'expensive'.

Ex Output:
Collision frequency is greater for what category of catalysts, which also tend to be more sensitive to temperature and more 'expensive'?


Ex Input:
The option to remove kidney stones other than surgery is ultrasound treatments.

Ex Output:

What is the option to remove kidney stones other than surgery?