メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.18997023462 34.8068620441782, 137.190435028639 34.808000063455, 137.189656268142 34.8077635801941, 137.189558717757 34.8077466964724, 137.189068809106 34.8076622771555, 137.188454025427 34.807572244862, 137.187478375067 34.8075207270014, 137.187212990682 34.806599300787, 137.188767876471 34.8061523663452, 137.1896284589 34.8059268325061, 137.18997023462 34.8068620441782)) ^^http://www.opengis.net/ont/geosparql#wktLiteral