Code to get the unique Word Frequency for the following using NLTK.
Seq Sentence
1 Let's try to be Good.
2 Being good doesn't make sense.
3 Good is always good.
Output:
{'good':3, 'let':1, 'try':1, 'to':1, 'be':1, 'being':1, 'doesn':1, 't':1, 'make':1, 'sense':1, 'is':1, 'always':1, '.':3, ''':2, 's':1}