@prefix rs:     <http://jena.hpl.hp.com/2003/03/result-set#> .
@prefix rdf:    <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .

[]  a   rs:ResultSet ;
    rs:resultVariable "x", "v" ;
    rs:size           "1" ;
    rs:solution
        [ rdf:type rs:ResultSolution ;
          rs:binding [ rdf:type rs:ResultBinding ; rs:variable "x" ; rs:value rs:undefined ] ;
          rs:binding [ rdf:type rs:ResultBinding ; rs:variable "v" ; rs:value "v-1-1"      ] ;
        ] ;
    .