Question: Who is the stock holder of the bank where  Peter Grauer works  ?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX res: <http://dbpedia.org/resource/>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Peter_Grauer> prop:occupation ?x . ?x prop:owner ?uri . ?x rdf:type onto:Bank}