Task: Analyze the tweet's sentiment and assign it to either 'neutral or no emotion' or one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: @keprdad  BTW, George W Bush left office in ,09. We have had terrific leadership under Barack Obama. Keep America Great.
This tweet contains emotions: 
anger, disgust, joy