anchor.diff:    ?person e:created ?project .
     ?project v:name ?name .
     ?project v:lang ?lang .
  -    FILTER (?age > 30 && ?lang == "java") }""")
  +    FILTER (?age > 30 && ?lang = "java") }""")
   ----
   
   [[pattern-filters]]
  -Pattern Filter(s)
  -^^^^^^^^^^^^^^^^^
  -
  -.A different way to filter all person who created a project.
  +==== Pattern Filter(s)
  +
  +A different way to filter all person who created a project.
   
   [gremlin-groovy,existing]
   ----
  
positive.code: ....
  
  [[examples]]
  Examples
  ~~~~~~~~~
  
  The following section presents a comprehensive examples of SPARQL queries that are currently covered by the SPARQL-Gremlin transpiler.
  
  [[select-all]]
  Select All
  ^^^^^^^^^^
  
  .Select all vertices in the graph.
  
  [gremlin-groovy,existing]
  ----
  
negative.code:     FILTER EXISTS { ?person e:created ?project } }""")
  ----
  
  Filter all person who did not create a project.
  
  [gremlin-groovy,existing]
  ----
  