: A_semantic_web_middleware_for_virtual_data_integration_on_the_webhttp://purl.org/semsur/ Create a prefix for http://purl.org/semsur/ Hit Enter to save Double click to create a prefix | : titlehttp://swrc.ontoware.org/ontology# Create a prefix for http://swrc.ontoware.org/ontology# Hit Enter to save Double click to create a prefix | A Semantic Web Middleware for Virtual Data Integration on the Web | : SemSur/http://purl.org/ Create a prefix for http://purl.org/ Hit Enter to save Double click to create a prefix |