メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.873570334 43.3350600952953, 141.873587721521 43.3351228843625, 141.873646258396 43.3353282933878, 141.873738603502 43.3356522449912, 141.871984691313 43.3359282820714, 141.870050195191 43.3362352724635, 141.86988852962 43.3356650860342, 141.86987670224 43.3356383218682, 141.869781982735 43.3353123903488, 141.869754526152 43.3352158803533, 141.87175622437 43.3349164272411, 141.872050383687 43.3348729493841, 141.873457120262 43.3346602614426, 141.873570334 43.3350600952953)) ^^http://www.opengis.net/ont/geosparql#wktLiteral