Is the sentiment extracted from the input text negative?

Text: Do you know what is happening tomorrow at Yerba Buena Center in San Fransisco? #iPhone5 #iPhone5 #iPhone5 #iPhone5 #iPhone5 #iPhone5
Do you know what is happening tomorrow at Yerba Buena Center in San Fransisco? #iPhone5 #iPhone5 #iPhone5 #iPhone5 #iPhone5 #iPhone5