メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.921213340639 35.2078313939243, 136.921169724394 35.2082067396222, 136.921122934028 35.2086094744369, 136.92005709633 35.2085281358783, 136.920100091302 35.2081186326528, 136.920144293008 35.2077434289362, 136.920187965449 35.2073728016219, 136.921256033172 35.2074640042204, 136.921213340639 35.2078313939243)) ^^http://www.opengis.net/ont/geosparql#wktLiteral