: hierarchyRoothttp://purl.org/linked-data/cube# Create a prefix for http://purl.org/linked-data/cube# Hit Enter to save Double click to create a prefix | rdfs:comment | Specifies a root of the hierar ...... ts but must have at least one. @en | : cube#http://purl.org/linked-data/ Create a prefix for http://purl.org/linked-data/ Hit Enter to save Double click to create a prefix |