> A side comment, for someone like me who isn't an NLP expert, it seems strange that there are no libraries that let me parse a string accoring to some rules in

> A side comment, for someone like me who isn't an NLP expert, it seems strange that there are no libraries that let me parse a string accoring to some rules in all possible ways (like a tree) and pick the one that is most probable. I'm sure this exists, but it is hard to search for... I think you're describing the Viterbi Algorithm.