メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.854656733357 43.3392094584838, 141.854716713613 43.3394599573025, 141.854789456788 43.3397031861907, 141.852603438302 43.3400491486677, 141.85094043943 43.3403122918626, 141.850790999057 43.3397939574466, 141.850644811321 43.3392425093023, 141.85187694801 43.3390693681699, 141.852336293163 43.3390022561146, 141.852396508777 43.3389910726413, 141.852903921192 43.338906262153, 141.85338635832 43.338839858862, 141.854495220697 43.3386608471436, 141.854656733357 43.3392094584838)) ^^http://www.opengis.net/ont/geosparql#wktLiteral