Question: What is the longest river in China?
SPARQL query:
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { ?uri a onto:River . ?uri onto:country <http://dbpedia.org/resource/China> . ?uri prop:length ?l . } ORDER BY DESC(?l) OFFSET 0 LIMIT 1