メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.977045991198 38.3300504943031, 140.975286975958 38.3295667991721, 140.974723226275 38.3293917858195, 140.975001814857 38.3287271342198, 140.975564576148 38.3274510289855, 140.975830519291 38.3268138350629, 140.976069139486 38.3273049983515, 140.97626083014 38.3278357768494, 140.976480149752 38.3285167260817, 140.976623956074 38.3289457765681, 140.976781326297 38.3293477824691, 140.977045991198 38.3300504943031)) ^^http://www.opengis.net/ont/geosparql#wktLiteral