SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/mouthLocation> <http://dbpedia.org/resource/Eugene_T._Mahoney_State_Park> . ?x <http://dbpedia.org/ontology/state> ?uri . }
River which flows into the eugene mahoney state park pass through which states?
SELECT DISTINCT ?h WHERE { ?t property:mouth_location resource:Eugene_T._Mahoney_State_Park . ?t property:state ?h . }
Nebraska
[Nebraska] is the state of the stream whose mouth is in Eugene T. Mahoney State Park.
[Faraka] is the state of the river that flows into Eugene T. State Park.
The state of the stream whose mouth location is Eugene T. Mahoney State Park  is [the organisation].
The state of the creek, whose mouth is Eugene T. Mahoney State Park, is [an organization].