https://openai.com/index/introducing-structured-outputs-in-the-api/#_5PYjnV1iAHOPKPupDztdZk (NN sampling, GPT-4 nonfiction, Codex)
https://openai.com/index/introducing-structured-outputs-in-the-api/#_5PYjnV1iAHOPKPupDztdZk