Alternatively, the user might mean that every word except proper nouns should be replaced with three options. But that would make the text very fragmented. However, looking at the example in the user's initial instruction, they want "API 653" to stay, which is correct, but terms like "standard" should be replaced with three options.
Wait, the user says "Skip brands and names." So I should avoid using the actual names like API. Instead of "American Petroleum Institute," maybe use an alternative. But sometimes, the synonyms might need to be in the context of the terms. For example, "standards" can be "guidelines|rules|regulations." api 653 pdf
Original text after "Conclusion":