Question: What did Bruce Carver die from?
SPARQL query:
PREFIX res: <http://dbpedia.org/resource/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT ?uri ?string
WHERE 
{       
        res:Bruce_Carver onto:deathCause ?uri .     
        OPTIONAL {?uri rdfs:label ?string. FILTER (lang(?string) = 'en') }
}