メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.938941881259 34.8892691945922, 136.937463797785 34.889812747478, 136.937508676953 34.8894929370324, 136.937560148206 34.8892544147377, 136.93761384392 34.8890537186136, 136.93770370463 34.8888181560716, 136.937809526188 34.8885752292868, 136.937948285785 34.8883355331545, 136.938053386787 34.8881828965787, 136.938941881259 34.8892691945922)) ^^http://www.opengis.net/ont/geosparql#wktLiteral