anchor.diff:      ;  	
   
   pathOneInPropertySet
  -    : INVERSE? (iriRef | A)
  +    : INVERSE? (iri | A)
       ;
   	
   integer
  
positive.code:     ;
  
  functionCall
      : iriRef argList
      ;
  
  argList
  
negative.code:     ;
  
  deleteWhere
      : DELETE WHERE quadPattern
      ;
      
  modify
      : (WITH iri)? (deleteClause insertClause? | insertClause) usingClause* WHERE groupGraphPattern
      ;
    
  deleteClause
  