メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.337112557905 43.0672600829085, 141.337466903307 43.0673117903544, 141.33730124437 43.067925568895, 141.337219058017 43.0682342915031, 141.337096255486 43.0685003507057, 141.335803762654 43.0683118770653, 141.335403120646 43.068263942162, 141.335540213259 43.0680953349691, 141.335681674861 43.0679231040668, 141.335690253118 43.067887314412, 141.335727286242 43.0677328069204, 141.335873290263 43.0671452473331, 141.335902396331 43.0670844346875, 141.337002194729 43.0672440805488, 141.337112557905 43.0672600829085)) ^^http://www.opengis.net/ont/geosparql#wktLiteral