What time do I need to leave the house to get to my 10 am appointment in downtown Birmingham?
[IN:GET_ESTIMATED_DEPARTURE What time do I need to leave [SL:SOURCE [IN:GET_LOCATION_HOME the house ] ] to get to [SL:DESTINATION [IN:GET_EVENT [SL:ORGANIZER_EVENT my ] [SL:DATE_TIME 10 am ] [SL:CATEGORY_EVENT appointment ] in [SL:LOCATION downtown Birmingham ] ] ] ? ]