SELECT DISTINCT ?uri WHERE { ?uri <http://dbpedia.org/ontology/riverMouth> <http://dbpedia.org/resource/Thames_Estuary> . ?uri <http://dbpedia.org/ontology/riverMouth> <http://dbpedia.org/resource/North_Sea> . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/River>}
Which river ends at Thames Estuary and North Sea?
SELECT DISTINCT ?v WHERE { ?v property:river_mouth resource:Thames_Estuary . ?v property:river_mouth resource:North_Sea . ?v rdf:type ontology:River }
River Thames
[River Thames] is the river whose mouths are Thames Estuary and North Sea.
[Tames] is a river flowing into the mouth of the Tames and the North Sea.