Question: Which companies have more than 1 million employees?
SPARQL query:
PREFIX onto: <http://dbpedia.org/ontology/> 
PREFIX prop: <http://dbpedia.org/property/> 
PREFIX res: <http://dbpedia.org/resource/> 
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> 
SELECT DISTINCT ?uri 
WHERE { 
         ?uri rdf:type onto:Company .
       { ?uri onto:numberOfEmployees ?n . }
       UNION
       { ?uri prop:numEmployees ?n . }
       FILTER ( ?n > 1000000 ) }