メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.873572561487 35.2492607559815, 136.874355833446 35.249210682855, 136.874484972083 35.2504929113273, 136.874544729664 35.2510041178862, 136.873593393601 35.2513105498192, 136.873546728489 35.2509850106763, 136.873374682891 35.2506060671663, 136.872378503488 35.2507310401091, 136.872304199395 35.2503584596889, 136.872205863403 35.2498125079911, 136.872143736546 35.2494731265752, 136.872133508516 35.2493821149058, 136.872496142734 35.2493469422146, 136.873572561487 35.2492607559815)) ^^http://www.opengis.net/ont/geosparql#wktLiteral