メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.003662958398 34.986663726606, 137.003720928347 34.9871450949143, 137.002235900403 34.9869673813328, 137.000920660868 34.9864510647104, 137.001402271083 34.9856302122142, 137.002331708359 34.9856678117752, 137.002957869062 34.985683164284, 137.003487216569 34.9857077496813, 137.003557294576 34.9861105354278, 137.003662958398 34.986663726606)) ^^http://www.opengis.net/ont/geosparql#wktLiteral