メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.356843503875 43.104050875314, 141.357295287316 43.1041159254734, 141.357322010296 43.104119719626, 141.357889667408 43.104196218428, 141.357789793836 43.104602417895, 141.357708259647 43.104889276626, 141.357554830949 43.1054600456157, 141.356994753193 43.1053765744644, 141.356525659343 43.1053067482367, 141.356001019418 43.1052285415229, 141.356321907806 43.1039816923066, 141.356843503875 43.104050875314)) ^^http://www.opengis.net/ont/geosparql#wktLiteral