Is the sentiment accompanying the input text positive?

Text: RT @user Britney: Lady Gaga's here tonight. Me: WHAT? *Watches Gaga the rest of the night *  Me: Who's concert was that ? I  ...
RT @user Britney: Lady Gaga's here tonight. Me: WHAT? *Watches Gaga the rest of the night *  Me: Who's concert was that ? I  ...