English grammar for parsing in NLTK

Question

Is there a ready-to-use English grammar that I can just load it and use in NLTK? I\'ve searched around examples of parsing with NLTK, but it seems like that I have to manual

Answer 1

I've tried NLTK, PyStatParser, Pattern. IMHO Pattern is best English parser introduced in above article. Because it supports pip install and There is a fancy document on the website (http://www.clips.ua.ac.be/pages/pattern-en). I couldn't find reasonable document for NLTK (And it gave me inaccurate result for me by its default. And I couldn't find how to tune it). pyStatParser is much slower than described above in my Environment. (About one minute for initialization and It took couple of seconds to parse long sentences. Maybe I didn't use it correctly).