What is <origin of the watercourse> of <Mittelland Canal> ?
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Which  is origin of the watercourse of Mittelland Canal ?
SELECT DISTINCT ?m WHERE { resource:Mittelland_Canal property:origin_of_the_watercourse ?m }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q48480> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P885> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer. }
select distinct ?answer where { wd:Q48480 wdt:P885 ?answer}
Dortmund–Ems Canal