text: The SPARQL assistant extends the functionality of the simple SPARQL search described in the 
  previous section. More complex queries for datasets could be built by clicking several options in the 
  GUI. 
  
  1. Category/Theme 
  
  Select one or more Categories/Themes defined in the DCAT-AP standard to filter the results. 
  Datasets will only be listed in the result if they belong to all selected categories/themes. 
  
  2. Distribution format 
  
  Datasets can contain distributions in different formats. You can select one or more formats to 
  exclude datasets from the result which distributions do not contain the desired formats. If your 
  format selection by the DCAT-AP standard is to strict you may enter a custom format string at the 
  bottom of the list, which will result in a simple text comparison in the format label field. 
  
  3. Search for keyword 
  
  Enter a search term which must be found in the dataset. You can limit this to the title or the 
  description. By enabling both options the term has to occur in the title and the description. 
  
  4. Count number of results 
  
  By clicking the “only count number of results” option, only the number of results that matches 
  the SPARQL query is returned. 