@prefix skos: . @prefix isac: . isac:_birthday_ skos:broader isac:specific_occasion_ . isac:_book_ skos:broader isac:specific_occasion_ . isac:_fact_ skos:broader isac:specific_occasion_ . isac:_holiday_ skos:broader isac:specific_occasion_ . isac:_wedding_ skos:broader isac:specific_occasion_ . isac:_christmas_ skos:broader isac:specific_occasion_ .