_:b61529990 _:b61529991 . _:b61529991 "2008-01-01"^^ . _:b61529989 _:b61529990 . _:b61529989 . _:b61529989 _:b61529992 . _:b61529992 _:b61529993 . _:b61529993 "2013-01-01"^^ .