メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.365474225059 43.8309402751904, 142.364015528952 43.829925849992, 142.36716567425 43.8276040883346, 142.367460526556 43.8273787611833, 142.367506844434 43.8272211943138, 142.367543743442 43.8271035975322, 142.368156478939 43.8270501648646, 142.369512844305 43.8279695662206, 142.36795132486 43.8290997021586, 142.366948262005 43.8297961621508, 142.365474225059 43.8309402751904)) ^^http://www.opengis.net/ont/geosparql#wktLiteral