Question: In which city where Charlie Chaplin's half brothers born?
SPARQL:
PREFIX dbo: <http://dbpedia.org/ontology/>
PREFIX res: <http://dbpedia.org/resource/>
ASK 
WHERE {
        res:Charlie_Chaplin dbo:relative ?x . 
        ?x text:"half brother of" ?res:Charlie_Chaplin . 
        ?x dbo:birthPlace ?y . 
        ?y text:"is a" text:"city" .
}