It is somebody or something that is the very best example of something.
John Paragon's birth name is John Dixon Paragon.
"She is a paragon of reading." is a sentence, yes. You will notice that it has a subject ("she") and a predicate ("is a paragon of reading")
She was a paragon of virtue.
Paragon means flawless, model, perfection.. Paragon of beauty means... flawless beauty
Here are some examples of paragon used in a sentence:She is a paragon of punctuality, and I am the tzaress of tardiness.The fact that he isn't exactly a paragon of virtue doesn't mean that everything that comes out of his mouth is a lie.Even though he was a paragon of physical perfection, his fake tan, blindingly white teeth, and expertly chiseled features made him look like a life-sized version of Barbie's boyfriend Ken.They thought she was a paragon of cold case crime-fighting, but she turned out to have planted or doctored evidence in over two dozen cases.
John Paragon is 5' 11".
Paragon China was created in 1897.
Captain Paragon was created in 1972.
Paragon Innovations was created in 1990.
Paragon Cable was created in 1980.
Paragon Cable ended in 2000.
Paragon Software ended in 1992.