メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.093431555364 37.8715211340217, 139.093857213132 37.8716751218445, 139.093922086783 37.8716978849462, 139.093819794798 37.8718700160508, 139.09322935576 37.872709812368, 139.093156174806 37.872813938646, 139.09236917614 37.873933333789, 139.092352073655 37.8739268025449, 139.091481267421 37.8735931471282, 139.091283030731 37.8738168615346, 139.090427185436 37.8735211355921, 139.0907352195 37.8729684204293, 139.090685601451 37.8728599818326, 139.090571811919 37.8726112216557, 139.090860718028 37.8721270221954, 139.0911491383 37.8716436696912, 139.0911390446 37.8716083838651, 139.091194479294 37.8715058956524, 139.091482809709 37.8709729864917, 139.091572928038 37.8708439981073, 139.092565562739 37.8712143499799, 139.093431555364 37.8715211340217)) ^^http://www.opengis.net/ont/geosparql#wktLiteral