input: Write a python function to predict the sentiment of a given sentence using NaiveBayesAnalyzer from TextBlob.
  assert predict_sentiment("This movie is amazing!")=="positive"
  assert predict_sentiment("I don't like this product.")=="negative"
  assert predict_sentiment("The book was okay, not too bad.")=="neutral"
output: from textblob import TextBlob
  from textblob.sentiments import NaiveBayesAnalyzer
  
  def predict_sentiment(sentence):
      blob = TextBlob(sentence, analyzer=NaiveBayesAnalyzer())
      sentiment = blob.sentiment.classification
      return sentiment