メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.326514892217 43.1138838547953, 141.326846268562 43.1142224126319, 141.326857332231 43.1142336138512, 141.327571911125 43.1149569970763, 141.3268624106 43.1153317355111, 141.326075845755 43.1157425580237, 141.325345173289 43.1150237466571, 141.325322382811 43.115000846155, 141.325005669225 43.1146832894506, 141.324681476641 43.1143272027866, 141.325121418549 43.1140990372767, 141.325452189772 43.1139230140356, 141.325827461406 43.1137242114862, 141.326179388661 43.1135390737568, 141.326514892217 43.1138838547953)) ^^http://www.opengis.net/ont/geosparql#wktLiteral