Ideally using regex, in python. I’m making a simple chatbot, and it’s currently having problems responding to phrases like “I love you” correctly (it’ll throw back “You love I” out of the grammar handler, when it should be giving back “You love me”).
In addition, I’d like it if you could think of good phrases to throw into this grammar handler, that’d be great. I’d love some testing data.
If there’s a good list of transitive verbs out there (something like a “top 100 used”) it may be acceptable to use that and special case the “transitive verb + you” pattern.
What you want is a syntactic analyser (aka parser)- this can be done by a rule-based system as described by @Dr.Kameleon, or statistically. There are many implementations out there, one being the Stanford one. These will generally tell you what the syntactic role of a word is (e.g. subject “You are here”, or object “She like you”). How you use that information to turn statements into questions is a whole different can of worms. For English, you can get a fairly simple rule-based system to work OK.