First direct to CKY folder
To run code, import nltk
first
If success then, write this command to console
python CKY.py <the grammar you wanna use, eg: grammar.txt> <the sentence you wanna parse, eg: sentence.txt>
And voilà use should see the screeen pop up if sentence can be parse if not you should see a comment that "The given sentence is not contained in the language produced by the given grammar"