That's interesting. One thing about plagiarism is that derivative works are considered plagiarism, even if the direct language is no longer used. https://www.copyright.gov/circs/circ14.pdf A court would have to rule, of course, but I wonder if this would actually get around that. That said, as US caselaw currently stands summaries are completely legal to a certain length -- you can't stop someone from summarizing what exists, it's like sharing a fact -- but you can't create a derivative work. So as long as the resulting output was short enough you shouldn't have to worry anyhow about plagiarism, since summary is covered, but if it's longer, derivative could be an issue. Anyway, thank you -- very interesting!