Answer:
A poem is a piece of writing that partakes of the nature of both speech and song that is nearly always rhythmical, usually metaphorical, and often exhibits such formal elements as meter, rhyme, and stanzaic structure.
SHORT ANSWER:
Sum lines that rhyme.
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It’s b because most of these are older stuff
The invention that changed the art world during the 19th century is the paint tube.
Like for real its Brenton Woods and the Lovelites