@prefix skos: . @prefix isac: . isac:_engineering_ skos:broader isac:special_duty_ . isac:_law_ skos:broader isac:special_duty_ . isac:_tax_ skos:broader isac:special_duty_ . isac:_president_ skos:broader isac:special_duty_ . isac:first_sergeant_ skos:broader isac:special_duty_ . isac:_duty_ skos:broader isac:special_duty_ . isac:_work_ skos:broader isac:special_duty_ . isac:_recruiter_ skos:broader isac:special_duty_ .