[msiemens]

That word would be Nahrungsmittelunverträglichkeit again. I just tested it and LaTeX (with `\usepackage[ngerman]{babel}`) does the same mistake as pyphen in the article (it hyphenates the word as Nah-rung-smit-telun-ver-träg-lichkeit).

To be fair, in day-to-day use problems like these will be corner cases as to my knowledge LaTeX tries to avoid hyphenation and even if it has to split a word, it has a good chance of getting it right. Also, to me this project's focus was more on learning about neural networks than creating a better hyphenator.