_:b19857 . _:b19857 "1"^^ . _:b19849 . _:b19849 "3"^^ . _:b20914 . _:b20911 _:b20912 . _:b20912 _:b19849 . _:b19857 . _:b19849 . _:b20912 _:b20914 . _:b19837 . _:b19837 . _:b20911 _:b19837 . _:b19837 "1"^^ . _:b20914 _:b19857 .