http://dbpedia.org/resource/Louis_le_Grange__Tenure__1 <http://www.ontologydesignpatterns.org/ont/dul/DUL.owl#TimeInterval> rdf:type <http://www.ontologydesignpatterns.org/ont/dul/DUL.owl#TimeInterval> dbpedia-owl:TimePeriod dbpedia-owl:Tenure dbpedia-owl:president <http://dbpedia.org/resource/Marais_Viljoen> dbpedia-owl:primeMinister <http://dbpedia.org/resource/John_Vorster> <http://dbpedia.org/resource/P._W._Botha> data from the linked data cloud