メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.879314724199 43.0142858473202, 142.879288571294 43.014380583563, 142.879126506804 43.0142869501252, 142.878151454592 43.0137026540455, 142.878036270992 43.0136336595617, 142.87730833579 43.0131975223413, 142.877466624336 43.0130622571399, 142.877514652078 43.0130212038509, 142.878452080006 43.0121698690556, 142.879544104772 43.0127893182943, 142.879721093283 43.0128854005727, 142.879706762883 43.0129319672547, 142.879532558838 43.013497245778, 142.879330068655 43.0142304143312, 142.879314724199 43.0142858473202)) ^^http://www.opengis.net/ont/geosparql#wktLiteral