: 15http://astraiosdb.utwente.nl/data/institution/ Create a prefix for http://astraiosdb.utwente.nl/data/institution/ Hit Enter to save Double click to create a prefix | : urlhttp://schema.org/ Create a prefix for http://schema.org/ Hit Enter to save Double click to create a prefix | https://www.uni-sofia.bg/index.php/eng | graph:institutionV5 |