メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.625103620042 34.7993835055751, 134.625102311038 34.7998979224524, 134.623461867679 34.7999007292199, 134.623461367539 34.8005347327651, 134.622915335121 34.8005405447856, 134.622905894006 34.7993798957981, 134.62291465406 34.7978307165823, 134.623018795581 34.7978377926949, 134.623319645872 34.7978498925899, 134.623908432277 34.7978611612039, 134.625084693909 34.7978636925213, 134.625103620042 34.7993835055751)) ^^http://www.opengis.net/ont/geosparql#wktLiteral