Love the fact that you put one word there which is nearly impossible to guess, just to taunt people :P where would the fun be without the challenge? nicely done.
However, one thing I do know is that a predicate is not a part of speech.
A sentence has a subject and a predicate. A subject is not a part of speech either. The subject tells you who the sentence is talking about. The predicate tells you what the subject is doing.