メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.763212169146 35.4264802638062, 136.762596218674 35.4266077632468, 136.762163325812 35.426696503258, 136.762023211227 35.4263448204815, 136.762047861887 35.4263356423866, 136.761856701712 35.4258347487123, 136.762262823516 35.4257222612987, 136.76221975845 35.4255855404514, 136.762505011628 35.4255230014885, 136.762591354861 35.4257541225243, 136.762682909654 35.4257251660997, 136.762698549898 35.4257804970154, 136.762953236892 35.4257227854454, 136.763212169146 35.4264802638062)) ^^http://www.opengis.net/ont/geosparql#wktLiteral