Question: In which country is there a dam on the Awash river?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { ?x onto:river <http://dbpedia.org/resource/Awash_River> . ?x prop:country ?uri . ?x rdf:type onto:Dam}