メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.060639270867 43.5526395714604, 142.059900046959 43.5530502852807, 142.058985452962 43.5536419549126, 142.058367232162 43.5541576507423, 142.055645642763 43.5518807827437, 142.057184605136 43.5509752724687, 142.058081390675 43.5504518207574, 142.059372727832 43.5496960155351, 142.059212628653 43.5504219707022, 142.059775903313 43.550375836784, 142.060150690695 43.5505742150588, 142.060330967284 43.5508758501847, 142.060350075763 43.5509700451027, 142.060207796847 43.5509321136703, 142.060639270867 43.5526395714604)) ^^http://www.opengis.net/ont/geosparql#wktLiteral