@prefix skos: . @prefix isac: . isac:chat_area_ skos:broader isac:interactive_area_ . isac:_posting_ skos:broader isac:interactive_area_ . isac:bulletin_board_ skos:broader isac:interactive_area_ . isac:_survey_ skos:broader isac:interactive_area_ . isac:_forum_ skos:broader isac:interactive_area_ . isac:chat_room_ skos:broader isac:interactive_area_ . isac:_blog_ skos:broader isac:interactive_area_ . isac:_contest_ skos:broader isac:interactive_area_ . isac:public_forum_ skos:broader isac:interactive_area_ . isac:_profile_ skos:broader isac:interactive_area_ . isac:_poll_ skos:broader isac:interactive_area_ . isac:_chat_ skos:broader isac:interactive_area_ . isac:discussion_forum_ skos:broader isac:interactive_area_ . isac:message_board_ skos:broader isac:interactive_area_ . isac:_chatroom_ skos:broader isac:interactive_area_ .