: Discovering_and_Maintaining_Links_on_the_Web_of_Datahttp://purl.org/semsur/ Create a prefix for http://purl.org/semsur/ Hit Enter to save Double click to create a prefix | : subjecthttp://purl.org/SemSur/ Create a prefix for http://purl.org/SemSur/ Hit Enter to save Double click to create a prefix | Link Discovery | : SemSur/http://purl.org/ Create a prefix for http://purl.org/ Hit Enter to save Double click to create a prefix |