メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.263638544787 36.0545963883114, 139.263637490647 36.0547428488075, 139.263673591532 36.0547448497649, 139.263670730053 36.0548290611533, 139.263711370174 36.0548274255261, 139.263710164074 36.0550969629764, 139.263519292361 36.0550808999134, 139.263518633965 36.0545941702534, 139.263638544787 36.0545963883114)) ^^http://www.opengis.net/ont/geosparql#wktLiteral