メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.316988600354 43.0651155459321, 141.316293282375 43.0650266045409, 141.316375387547 43.0651215147794, 141.316605202494 43.0653812152261, 141.316919068538 43.065746813557, 141.316160261213 43.066161892268, 141.315562286813 43.0655180730207, 141.314787830029 43.0646978290172, 141.315297659728 43.0644317214456, 141.315459912632 43.0643461900573, 141.315480512187 43.0643350354683, 141.315549038051 43.064345089651, 141.316565589856 43.0644966475755, 141.31705382053 43.0645660352022, 141.31711593846 43.0645748407173, 141.317018847619 43.0649870202805, 141.316988600354 43.0651155459321)) ^^http://www.opengis.net/ont/geosparql#wktLiteral