http://dbpedia.org/resource/Ng_Cho-nam__Tenure__4 <http://www.ontologydesignpatterns.org/ont/dul/DUL.owl#TimeInterval> dbpedia-owl:office xsd:string Vice Chairman ofHong Kong Birdwatching Society rdf:type <http://www.ontologydesignpatterns.org/ont/dul/DUL.owl#TimeInterval> dbpedia-owl:TimePeriod dbpedia-owl:Tenure data from the linked data cloud