メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.554510850607 40.2795330805608, 140.554508687827 40.2797752490851, 140.552622930742 40.2797945129969, 140.552653826617 40.2806017823434, 140.551072872 40.2806503260247, 140.551043059868 40.2795858967265, 140.550963981059 40.2780569114733, 140.551977256503 40.2780215567221, 140.554399204835 40.2779517733479, 140.554492825542 40.2789656239885, 140.554510850607 40.2795330805608)) ^^http://www.opengis.net/ont/geosparql#wktLiteral