メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.967381992213 34.9242801260471, 136.966221734346 34.9243706908969, 136.964121079683 34.9245598278953, 136.962818030775 34.924634134413, 136.962894249801 34.9245615106455, 136.963942433437 34.9232877489232, 136.965911095104 34.9231262148182, 136.967052503097 34.9230181563298, 136.967538552723 34.9230088819256, 136.967678672369 34.9230467189977, 136.967790366066 34.9230826091182, 136.967844181877 34.9231315029463, 136.967861139965 34.9231823801422, 136.967862358218 34.9232268221206, 136.967786662876 34.9234212193967, 136.967381992213 34.9242801260471)) ^^http://www.opengis.net/ont/geosparql#wktLiteral