メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.378759672135 43.0835776882088, 141.378086879556 43.0837592898217, 141.37740021734 43.0839376184038, 141.377300808335 43.083695140048, 141.377260113413 43.0835948219685, 141.377225301241 43.0834654332192, 141.377206532959 43.0834021350355, 141.377107111843 43.0830661894045, 141.377096698491 43.0830293274424, 141.376991683774 43.0826550108173, 141.376840958768 43.0821486889195, 141.37828866498 43.0823550218001, 141.378317729185 43.0823623457026, 141.379117606987 43.0824802548891, 141.379441584596 43.0834293462839, 141.378759672135 43.0835776882088)) ^^http://www.opengis.net/ont/geosparql#wktLiteral