メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.17280245972 43.9156828499467, 144.172088832674 43.9165039285701, 144.171723003311 43.9169247152346, 144.171457202594 43.9168085529317, 144.171610553161 43.9165983618347, 144.170826332847 43.9162663848091, 144.170866482119 43.9162202266116, 144.170327959577 43.9160447239111, 144.170247614598 43.916014619149, 144.171144733946 43.915127447164, 144.171642849067 43.9144589159387, 144.172395746175 43.9147974988803, 144.173173574606 43.9151790847492, 144.173221166895 43.9152009454744, 144.17280245972 43.9156828499467)) ^^http://www.opengis.net/ont/geosparql#wktLiteral