メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.861047478046 43.3345357544217, 141.861117917125 43.3347560491437, 141.861211540719 43.335060815872, 141.86055731221 43.3351622614016, 141.860316266943 43.3351970300109, 141.86017711625 43.3346721922051, 141.859998420558 43.3339747751179, 141.859938207656 43.3337495209493, 141.860833071352 43.3336287812801, 141.860960673804 43.3341521028657, 141.861047478046 43.3345357544217)) ^^http://www.opengis.net/ont/geosparql#wktLiteral