In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: Magnetism in normal bar magnets and electromagnets does not come from magnetic monopoles .
A: 
Magnetism in bar magnets and electromagnets is not caused by magnetic monopoles , and indeed , there is no known experimental or observational evidence that magnetic monopoles exist .