メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.336225775998 43.0550242603701, 141.33730316753 43.0551731709597, 141.337163298192 43.0557315965818, 141.337009883068 43.0563108708446, 141.335944187641 43.0561737957514, 141.33597241221 43.0560492566466, 141.335475335504 43.0559843072317, 141.335590502316 43.0555273831402, 141.335736540603 43.0549549440264, 141.335122942184 43.0548710564222, 141.335225233885 43.0546027943741, 141.335944175872 43.0546901952436, 141.335928337149 43.0547686270216, 141.336098289061 43.0547938266386, 141.336105022451 43.0550055017588, 141.336225775998 43.0550242603701)) ^^http://www.opengis.net/ont/geosparql#wktLiteral