メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.297950204662 43.1144151229812, 141.298252491696 43.1142667787503, 141.29860745366 43.1146157426886, 141.299684120995 43.1156349438716, 141.299352224094 43.1158229930837, 141.299158914531 43.1159325093547, 141.298718179393 43.1161621329731, 141.298479634875 43.1162851972039, 141.298119419906 43.1164725859356, 141.297595182591 43.1167748646779, 141.296887033812 43.1161166107328, 141.296254884681 43.1155416190279, 141.296158876435 43.1154372955544, 141.296706905537 43.115098511129, 141.296846754138 43.1150132398292, 141.2972087113 43.1148245329716, 141.297565908041 43.1146208060711, 141.297950204662 43.1144151229812)) ^^http://www.opengis.net/ont/geosparql#wktLiteral