Question: List the outflows of the lake whose one of the outflows is Benu rive?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/outflow> <http://dbpedia.org/resource/Benué_River> . ?x <http://dbpedia.org/ontology/outflow> ?uri  . }
Answer: The outflows of the lake whose one outflow is Benu River are [Benué River, Nile, Congo River, Zambezi].