For a reservation at 6:45 in the Arts District downtown, by what time would I need to leave in order to arrive on time?
[IN:GET_ESTIMATED_DEPARTURE For a [SL:DESTINATION [IN:GET_EVENT [SL:CATEGORY_EVENT reservation ] [SL:DATE_TIME at 6 : 45 ] in [SL:LOCATION the Arts District ] [SL:LOCATION [IN:GET_LOCATION [SL:LOCATION_MODIFIER downtown ] ] ] ] ] , by what time would I need to leave in order to arrive on time ? ]