メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.987176906165 34.8979416743556, 136.987994784046 34.8978312528576, 136.988577925014 34.8992180050919, 136.987442976674 34.8996029169209, 136.986634586576 34.8998715329676, 136.986572804923 34.8994017519645, 136.986489200966 34.8987817145567, 136.986414447167 34.898049074453, 136.987176906165 34.8979416743556)) ^^http://www.opengis.net/ont/geosparql#wktLiteral