メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.466346700248 40.5243012788478, 141.466020580672 40.5241790970426, 141.465415722164 40.5246043999862, 141.464212790667 40.5243936174255, 141.462900003421 40.5241676284089, 141.463409859474 40.5225049918477, 141.463801005881 40.5211191960451, 141.463973383369 40.5211499496844, 141.465402665664 40.5214016343177, 141.465803098795 40.5214714478889, 141.466567674302 40.5216046943466, 141.46636237145 40.5218663639865, 141.466248749821 40.522029237539, 141.466221299185 40.5222227370586, 141.46622866919 40.5225935972861, 141.466340195933 40.5242470676812, 141.466346700248 40.5243012788478)) ^^http://www.opengis.net/ont/geosparql#wktLiteral