@prefix rr: <http://www.w3.org/ns/r2rml#> .
@prefix dept: <http://example.com/dept#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@base <http://example.com/base/> .

<TriplesMap1>
    a rr:TriplesMap;
    rr:logicalTable [ rr:sqlQuery """
       SELECT ('Department' || "deptno") AS "deptId"
            , "deptno"
            , "dname"
            , "loc"
       FROM "DEPT"
       """ ];

    rr:subjectMap [ rr:column "\"deptId\""; rr:termType rr:BlankNode;
                    rr:inverseExpression "{\"deptno\"} = substr({\"deptId\"},length('Department')+1)"];

    rr:predicateObjectMap 
    [ 
      rr:predicate	dept:location ; 
      rr:objectMap	[ rr:column "\"loc\"" ]
    ];
 
.