A man wearing a red shirt is quickly polishing a light wooden floor with a small green towel next to a yellow can of Wood Silk.
a man polishes a floor next to a can
A man polishes is part of the whole description of the man wearing a red shirt.
Man wearing a red shirt is a type of man, and polishes a floor is a paraphrase of polishing a light wooden floor.
"Polishes a floor" is a rephrasing of "Polishing a floor"