You can't reproduce on the web interface, because the temperature settings are higher than what's required to compress the text. You need to use the API.

However, I had good luck reproducing poems on GPT 3.5, both copyrighted and not copyrighted, because the choice of words is a lot more "specific" so to speak, and therefore higher temperature isn't enough to prevent complete reproduction of the originals. See https://chat.openai.com/share/f6dbfb78-7c55-4d89-a92e-f4da23... (Italian; the second example is entirely hallucinated even though a poem with that title exists, while the first and third are recalled perfectly).