Editorial of the Special Issue on Deep Learning and Knowledge Graphs. - Hitzler, Pascal; Janowicz, Krzysztof; Alam, Mehwish; Buscaldi, Davide; Cochez, Michael; Osborne, Francesco; Reforgiato Recupero, Diego; Sack, Harald; Refogiato Recupero, Diego (Semantic Web (1570-0844), 2022)