Question: Under which pseudonym did Charles Dickens publish some of his books?
SPARQL:
PREFIX dbo: <http://dbpedia.org/ontology/>
PREFIX res: <http://dbpedia.org/resource/>
SELECT DISTINCT ?s
WHERE { 
        ?x dbo:author res:Charles_Dickens . 
        ?x text:"published under pseudonyn" ?s . 
}