anchor.diff:      ;
      
   delete 	  
  -    : DELETE ( deleteData | deleteWhere )
  +    : DELETE (deleteData | deleteWhere)
       ;
   
   deleteData
  
positive.code:     ;
  
  triplesSameSubjectPath
      : ^(TRIPLE propertyListNotEmpty)
      | ^(TRIPLE triplesNode (propertyListNotEmpty)?)
      ;
      
  path
  
negative.code:     ;  	
  
  pathOneInPropertySet
      : INVERSE? (iriRef | A)
      ;
  	
  triplesNode
      : ^(COLLECTION graphNode+)
      | ^(TRIPLES_NODE ^(SUBJECT BLANK_NODE) propertyListNotEmpty)
      ;
  
  graphNode
  