A man in a black business suit stands upright next to a man wearing blue and leaning against a railing.
A man in a black suit is standing next to a man in a blue outfit.
A business suit is a suit. Standing upright is standing, and a man wearing blue is a man in a blue outfit.
There is both a man in black standing next to a man in blue.
Man in a black business suit is a type of man, and stands upright is a paraphrase of is standing.