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

Ex Input:
Slimy smear does the bacteria look when seen with the naked eye.

Ex Output:
How does the bacteria look when seen with the naked eye?


Ex Input:
The earth's magnetic poles have switched places repeatedly in the past.

Ex Output:
The earth's magnetic poles have done what repeatedly in the past?


Ex Input:
Rna and dna are types of nucleic acids containing the elements carbon, hydrogen, oxygen, nitrogen, and phosphorus.

Ex Output:

Rna and dna are types of what biochemical compounds containing the elements carbon, hydrogen, oxygen, nitrogen, and phosphorus?