: 30http://astraiosdb.utwente.nl/data/continuing_education_course/ Create a prefix for http://astraiosdb.utwente.nl/data/continuing_education_course/ Hit Enter to save Double click to create a prefix | : typehttp://gch.utwente.nl/ontology# Create a prefix for http://gch.utwente.nl/ontology# Hit Enter to save Double click to create a prefix | NaN @en |