The Great Falls of the Potomac River are located upstream (to the northwest) of which US city?
the great falls of the potomac river are located upstream (to the northwest) of which us city
FreebaseQA-train-15269.P0
potomac river
potomac river
m.0g52g
location.location.partially_contained_by..location.partial_containment_relationship.partially_contained_by
m.0rh6k
washington