メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.752439242435 43.2051691942609, 141.752745247144 43.2053244712447, 141.751412031925 43.2067563196133, 141.751187072177 43.2066424628264, 141.751147721956 43.2066221773254, 141.751091569703 43.2065931685808, 141.750354327664 43.2062127143743, 141.751387535849 43.2051428180699, 141.751712729194 43.2048005404516, 141.752439242435 43.2051691942609)) ^^http://www.opengis.net/ont/geosparql#wktLiteral