code: def annotate(self, word, pos=None, polarity=0.0, subjectivity=0.0, intensity=1.0, label=None):
          
          w = self.setdefault(word, {})
          w[pos] = w[None] = (polarity, subjectivity, intensity)
          if label:
              self.labeler[word] = label
docs: Annotates the given word with polarity, subjectivity and intensity scores,
              and optionally a semantic label (e.g., MOOD for emoticons, IRONY for "(!)").