@prefix rdf:    <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rs:     <http://www.w3.org/2001/sw/DataAccess/tests/result-set#> .

[] rdf:type rs:ResultSet ;
    rs:resultVariable "x" ;
    rs:resultVariable "y" ;
    rs:size "0" ;

## Exact graph match - "string" != "string"^^xsd:string

##     rs:size "1" ;
##     rs:solution
##         [ rdf:type rs:ResultSolution ; 
##           rs:binding [ rdf:type rs:ResultBinding ;
##                        rs:variable "x" ; rs:value <http://rdf.hp.com/r> ] ;
##           rs:binding [ rdf:type rs:ResultBinding ;
##                        rs:variable "y" ; rs:value <http://rdf.hp.com/p1> ] ;
##         ] ;
    .