_:b668491881 . _:b668491882 _:b668491881 . _:b668491883 _:b668491882 . _:b668491881 . _:b668491883 . _:b668491882 . _:b668491882 . _:b668491881 . _:b668491883 . _:b668491881 . _:b668491883 . _:b668491882 .