@cached_property<EOL><INDENT>def sentiment(self):<DEDENT>
return self.analyzer.analyze(self.raw)<EOL>
Return a tuple of form (polarity, subjectivity ) where polarity
        is a float within the range [-1.0, 1.0] and subjectivity is a float
        within the range [0.0, 1.0] where 0.0 is very objective and 1.0 is
        very subjective.

        :rtype: namedtuple of the form ``Sentiment(polarity, subjectivity)``