. _:b17347230 . _:b17347226 _:b17347227 . _:b17347226 . _:b17347226 . _:b17347231 . . _:b17347230 _:b17347231 . _:b17347229 . "duration" . _:b17347228 . _:b17347228 _:b17347229 . _:b17347229 _:b17347230 . _:b17347227 . _:b17347227 _:b17347228 . "The duration of the item (movie, audio recording, event, etc.) in ISO 8601 date format." . _:b17347231 .