Knowledge Graphs and Semantic Web First Iberoamerican Conference, KGSWC 2019, Villa Clara, Cuba, June 23-30, 2019, Proceedings - Villazón-Terrazas, Boris; Villazón-Terrazas, Boris; Hidalgo-Delgado, Yusniel; Hidalgo-Delgado, Yusniel (Springer International Publishing : Imprint: Springer, 2019)