@prefix skos: . @prefix isac: . isac:elvis_presley_ skos:broader isac:notable_guest_ . isac:_author_ skos:broader isac:notable_guest_ . isac:_president_ skos:broader isac:notable_guest_ . isac:jefferson_davis_ skos:broader isac:notable_guest_ . isac:_bill_ skos:broader isac:notable_guest_ . isac:charlie_chaplin_ skos:broader isac:notable_guest_ . isac:frank_sinatra_ skos:broader isac:notable_guest_ . skos:broader isac:notable_guest_ . skos:broader isac:notable_guest_ .