Question: Give me all professional skateboarders from Sweden.
SPARQL query:
PREFIX onto: <http://dbpedia.org/ontology/>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX res: <http://dbpedia.org/resource/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT DISTINCT ?uri ?string WHERE 
{
	?uri onto:occupation res:Skateboarding . 
        { ?uri onto:birthPlace res:Sweden . }
        UNION
        { ?uri onto:birthPlace ?place . 
          ?place onto:country res:Sweden . }
        OPTIONAL { ?uri rdfs:label ?string. FILTER (lang(?string) = 'en') }
}