GoWeb workflow (2). Workflow for a request containing a concept selected from the result tree in the user browser. When a user clicks on a concept in tree from the GoWeb website (1), the browser sends a request to update the search results (2). GoWeb filters all search results. If a result is annotated with the concept or a child of this concept, it is included in the new result list (3). Additionally the results are reranked and the highlighting of the selected concept and children is updated. The new result list is finally send to the browser.