text: 9.21 Some SPARQL Pizza Queries 
  To start with go to the SPARQL Query tab. If it isn’t already there you can as always add it using 
  Window>Tabs>SPARQL Query. This tab consists of two views, the top which holds the query and the 
  bottom which holds the results. There should be some text already there. It may look confusing, but we’ll 
  explain it. Just to start with hit the Execute button at the bottom of the tab. You should see a bunch of 
  classes and class expressions returned. 