Question: Give me all world heritage sites designated within the past two years.
SPARQL query:
PREFIX onto: <http://dbpedia.org/ontology/> 
PREFIX prop: <http://dbpedia.org/property/> 
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> 
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> 
SELECT DISTINCT ?uri 
WHERE { 
        ?uri rdf:type onto:WorldHeritageSite . 
        ?uri prop:year ?x . 
        FILTER ( ?x >= '2012'^^xsd:integer) 
}