Is the sentiment present in the input text positive?

Input: 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