メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.194950555017 36.1278010772763, 136.194774968755 36.1280731564662, 136.194599377319 36.1283452224068, 136.193742898167 36.1279354524863, 136.194004473434 36.1276702057871, 136.194193096628 36.1274573587231, 136.194950555017 36.1278010772763)) ^^http://www.opengis.net/ont/geosparql#wktLiteral