ICA-Abs Abstracts of the ICA ICA-Abs Abstr. Int. Cartogr. Assoc. 2570-2106 Copernicus Publications Göttingen, Germany 10.5194/ica-abs-6-53-2023 Querying CityGML Data through Virtual Knowledge Graphs Ding Linfang ¹ Xiao Guohui ^{2 3} Pano Albulen ⁴ Fan Hongchao ¹ Calvanese Diego ^{4 5} Meng Liqiu ⁶ 1 Norwegian University of Science and Technology, Norway 2 University of Bergen, Norway 3 University of Oslo, Norway 4 Free University of Bozen-Bolzano, Italy 5 Umeå University, Sweden 6 Technical University of Munich, Germany 11 08 2023 6 53 Copyright: © 2023 Linfang Ding et al. 2023 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/ This article is available from https://ica-abs.copernicus.org/articles/6/53/2023/ica-abs-6-53-2023.html The full text article is available as a PDF file from https://ica-abs.copernicus.org/articles/6/53/2023/ica-abs-6-53-2023.pdf