メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.821264637071 35.4052193193311, 136.81966079007 35.405464525638, 136.818968327216 35.402489292868, 136.82190708834 35.4020317707923, 136.822658617113 35.4035497866164, 136.822882183557 35.4041028045987, 136.822882644463 35.4041159040558, 136.82288730239 35.4042447182923, 136.822888841954 35.4042875388521, 136.823125592992 35.4049373530653, 136.821264637071 35.4052193193311)) ^^http://www.opengis.net/ont/geosparql#wktLiteral