#do not change the code in this cell

#make sure you run this cell once if you are working on colab or on a fresh installation of anaconda

import nltk

nltk.download('twitter_samples')

nltk.download('punkt')

# do not change the code in this cell

# make sure you run this cell

from nltk.corpus import twitter_samples

from nltk.tokenize import word_tokenize

import random

import math

def sample_sentences(corpus, sample_size):

size = len(corpus)

ids = random.sample(range(size), sample_size)

sample = [corpus[i] for i in ids]

return sample

random.seed(37)

tsample = sample_sentences(twitter_samples.strings(), 1000)

twittertokens = [word_tokenize(tweet.lower()) for tweet in tsample]

twittertokens[:5]

ii) What is meant if we say that a word is ambiguous with respect to part-of-speech? Give an example of a word in `tagged_tweets[0]` which could be said to be ambiguous with respect to part-of-speech. What information does a HMM part-of-speech tagger use to try to resolve the ambiguity?