メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.169187849588 34.2229810764908, 135.1684252307 34.2227573052134, 135.168397905093 34.2221804206569, 135.168406808816 34.2219122742565, 135.168798274707 34.2219564730243, 135.168857080559 34.2217095117153, 135.169192307941 34.2217299473256, 135.16918269895 34.2222260072967, 135.169185035635 34.2224721138176, 135.169187849588 34.2229810764908)) ^^http://www.opengis.net/ont/geosparql#wktLiteral