メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.18655253899 34.7967211424695, 137.185692069098 34.7970255378224, 137.185623735096 34.7968790607653, 137.185555371368 34.7965860950126, 137.185525932625 34.7963059397311, 137.185404955406 34.7958874821266, 137.18545958733 34.79586493619, 137.185527870602 34.7958085828324, 137.185555165402 34.795707162954, 137.185964913764 34.795583140684, 137.18655253899 34.7967211424695)) ^^http://www.opengis.net/ont/geosparql#wktLiteral