メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.335866195511 43.0995862748586, 141.335780624079 43.0999335951496, 141.335724266235 43.1001413161116, 141.335194059747 43.1001246250794, 141.334936859246 43.0992667408816, 141.334938401267 43.0991309495961, 141.334906330216 43.0990224569682, 141.334840768348 43.0988622162789, 141.334828070095 43.0986902326454, 141.335337438091 43.0987391098464, 141.336054485686 43.09883367021, 141.336037319427 43.0988650400264, 141.336020351326 43.0989605508692, 141.335866195511 43.0995862748586)) ^^http://www.opengis.net/ont/geosparql#wktLiteral