When should I leave the office to get to the Lady GaGa concert by 7 tomorrow?
[IN:GET_ESTIMATED_DEPARTURE When should I leave [SL:SOURCE [IN:GET_LOCATION_WORK the office ] ] to get to [SL:DESTINATION [IN:GET_EVENT the [SL:NAME_EVENT Lady GaGa ] [SL:CATEGORY_EVENT concert ] ] ] [SL:DATE_TIME_ARRIVAL by 7 tomorrow ] ? ]