The semantic web 17th international conference, ESWC 2020, Heraklion, Crete, Greece, May 31-June 4, 2020 : proceedings - Harth, Andreas 1976-; Kirrane, Sabrina; Ngonga Ngomo, Axel-Cyrille 1983-; Paulheim, Heiko 1977-; Rula, Anisa; Gentile, Anna-Lisa; Haase, Peter; Cochez, Michael 1988- (Springer, 2020)