text: The SELECT part of a SPARQL query determines what data to display. The WHERE part of a query 
  determines what to match in the query. If you want to display everything matched in the WHERE clause 
  you can just use a*for the SELECT clause. The initial default query in this tab is set up with no 
  knowledge of the specific ontology. I.e., it will return all the classes that are subclasses of other classes 
  regardless of the ontology. To get information about Pizzas the first thing we need to do is to add 
  another prefix to the beginning of the query. In our case the Pizza ontology has been set up with a 
  mapping to the prefix pizza (you can see this in the ontology prefixes tab in the Active ontology tab 
  discussed in chapter 7). So, add the following to the SPARQL query after the last PREFIX statement: 