メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.356124890486 43.1191435848674, 141.356138967677 43.1191459446803, 141.356540781436 43.1192015999383, 141.356544446532 43.1192070430647, 141.356977243826 43.1192777060524, 141.35689114326 43.119640702772, 141.356832273078 43.1198934961893, 141.356769520536 43.1201623647498, 141.356295974859 43.120107488914, 141.355721447703 43.1200451452156, 141.355464489117 43.1200162122379, 141.355616163159 43.11944900399, 141.355602466176 43.1194468586052, 141.355698822438 43.1190725516237, 141.356124890486 43.1191435848674)) ^^http://www.opengis.net/ont/geosparql#wktLiteral