メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.108713121728 39.5529621162143, 141.108503283246 39.5530638074961, 141.108352183511 39.5523921178033, 141.108366181685 39.5517923797679, 141.108805989698 39.5517442594388, 141.108794894075 39.5513094610785, 141.10881455284 39.5509561143614, 141.10881380161 39.5507676963657, 141.108808388355 39.5505901624191, 141.109139655645 39.5503212277267, 141.110312639011 39.5492809949808, 141.111233755244 39.5504225498695, 141.111732167637 39.5510487917609, 141.109325108268 39.5525207403884, 141.108713121728 39.5529621162143)) ^^http://www.opengis.net/ont/geosparql#wktLiteral