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

Ex Input:
Water can be boiled to kill giardia and most other pathogens.

Ex Output:
Water can be boiled to kill giardia and most other what?


Ex Input:
Some compounds form rigid frameworks called crystals.

Ex Output:
Some compounds form rigid frameworks called what?


Ex Input:
Triad is the arrangement of a t-tubule with the membranes of sr on either side called.

Ex Output:

What is the arrangement of a t-tubule with the membranes of sr on either side called?