Question: Which museum exhibits The Scream by Munch?
SPARQL query:
PREFIX res: <http://dbpedia.org/resource/>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT ?uri ?string
WHERE 
{
	res:The_Scream prop:museum ?string .
        OPTIONAL { ?uri rdfs:label ?string. }
}