input: Write a function to classify the sentiment of movie reviews using Natural Language Processing. If the sentiment is negative, return "The sentiment of the sentence is negative!". Otherwise, return "The sentiment of the sentence is positive!". 
  
  assert classify_sentiment("The movie was terrible. It felt like it would never end!")=='The sentiment of the sentence is negative!'
  assert classify_sentiment("The movie was amazing. I loved every minute of it!")=='The sentiment of the sentence is positive!'
output: def classify_sentiment(review):
      from textblob import TextBlob
      sentiment = TextBlob(review).sentiment.polarity
      if sentiment < 0:
          return "The sentiment of the sentence is negative!"
      else:
          return "The sentiment of the sentence is positive!"