When should I leave Dad's house to get to the movies before 9PM?
[IN:GET_ESTIMATED_DEPARTURE When should I leave [SL:SOURCE [IN:GET_LOCATION_HOME [SL:TYPE_RELATION Dad ] 's house ] ] to get to [SL:DESTINATION [IN:GET_EVENT [SL:CATEGORY_EVENT the movies ] ] ] [SL:DATE_TIME_ARRIVAL before 9PM ] ? ]