メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.333166221266 43.0679518888487, 141.333233749691 43.0679615893063, 141.334037201355 43.0680726097593, 141.333859378296 43.0687406490865, 141.333735186514 43.0692018578414, 141.33322080299 43.0691386561401, 141.332167014343 43.0689986821197, 141.332216633318 43.068797868402, 141.332222145846 43.0687756188737, 141.332257855195 43.068639045211, 141.332313397877 43.0684268858801, 141.33237697624 43.068184056813, 141.332455521966 43.0678574460891, 141.332873361477 43.0679098190727, 141.332895693663 43.0679130274914, 141.333166221266 43.0679518888487)) ^^http://www.opengis.net/ont/geosparql#wktLiteral