Further with knowledge graphs proceedings of the 17th International Conference on Semantic Systems, 6-9 September 2021, Amsterdam, The Netherlands - Alam, Mehwish; Groth, Paul; Boer, Victor de; Pellegrini, Tassilo; Pandit, Harshvardhan J.; Montiel, Elena; Rodríguez Doncel, Víctor; McGillivray, Barbara; Meroño-Peñuela, Albert (AKA, Akademische Verlagsgesellschaft GmbH, 2021)