メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.360619530089 43.0669004214758, 141.360319380433 43.0680946083041, 141.359633449369 43.06799939313, 141.358823547389 43.0678869624108, 141.358884405533 43.067619199419, 141.358940454767 43.067378826859, 141.358991786436 43.0671461531334, 141.35909843334 43.0667170578629, 141.359331464377 43.0667479188332, 141.359697001266 43.0667963363142, 141.359891736947 43.0668221135912, 141.360619530089 43.0669004214758)) ^^http://www.opengis.net/ont/geosparql#wktLiteral