need to do small task on jython

Hello, Please see the file attached it has the grammar rule code in python. now what is need is building my own grammars to be able to generate sentences and responses during interaction with user. and because my code is in Java I have to use jython to build the grammar or as I understand to combine my rules with java. lets say the user asked the system: How are you ?? the logical response should be I am fine, ok, good ,,,etc I want the system able to identify the sentences and build the parse tree and get each type of word as noun, verb, adv, etc if the system got the input and found the first word is noun (subject) it should look at the grammar and see noun should followed by which type which is verb and in this case it knows. I hope I did explain it well and you understand it. Please please hope you can help me and hope I got your reply ASAP. Thanks alot, P.S : I have Q : using jython would be different from python ?? I have a little confused.