メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.337428221653 43.0414052285962, 141.338068112137 43.0414528105087, 141.338055846148 43.041588237757, 141.337974004088 43.0421033151661, 141.337925701293 43.0425160479069, 141.337892980575 43.0427571593628, 141.337513941703 43.0427283967384, 141.33737309944 43.04271770844, 141.336778705831 43.0426725966545, 141.336730529159 43.0426689757825, 141.33617875558 43.042627083623, 141.336219984881 43.0424010915396, 141.33622352617 43.0423563202389, 141.336266813881 43.0419915131013, 141.336279238731 43.0419360514801, 141.336335711347 43.0414645885435, 141.336345072427 43.0413247767576, 141.337428221653 43.0414052285962)) ^^http://www.opengis.net/ont/geosparql#wktLiteral