メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.356871320552 43.1082433735177, 141.356787237735 43.1085795126188, 141.356716129604 43.108894724526, 141.356127548909 43.1088158874025, 141.355697546855 43.1087493918781, 141.355154538118 43.1086721691516, 141.355231564943 43.108372755669, 141.355314523177 43.1080418110468, 141.355397854976 43.1076852008413, 141.356957131917 43.1078940271107, 141.356923003017 43.1080493238077, 141.356871320552 43.1082433735177)) ^^http://www.opengis.net/ont/geosparql#wktLiteral