メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.874190612982 35.2721551255924, 136.874158113203 35.2724989233315, 136.874156530865 35.2725382861318, 136.873549119649 35.2725059914066, 136.872810396313 35.2724656333986, 136.871940328809 35.2724141782379, 136.871900923555 35.2719585859439, 136.871874900607 35.2717478882724, 136.872427998409 35.2716603447761, 136.872633880028 35.2716356969367, 136.87314536598 35.2715552308052, 136.873584559575 35.2714889566406, 136.874133281078 35.2714049831826, 136.874260249552 35.2713852861234, 136.874190612982 35.2721551255924)) ^^http://www.opengis.net/ont/geosparql#wktLiteral