メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.317760808111 43.1300388447773, 141.318529868843 43.1308090856457, 141.318109762618 43.131043746585, 141.317817196725 43.1312071407772, 141.317718606629 43.1312623942432, 141.317100235512 43.1316088143078, 141.316643237107 43.1318691911553, 141.3158538222 43.13111206588, 141.315201697146 43.1304649250908, 141.315521186845 43.1302803053874, 141.315897637909 43.1300626710499, 141.31627195338 43.129846353808, 141.316669132312 43.1296290955761, 141.317114959011 43.1293824106367, 141.317760808111 43.1300388447773)) ^^http://www.opengis.net/ont/geosparql#wktLiteral