メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.314270729491 43.0741606574094, 141.313876954045 43.0743915610196, 141.31349354288 43.0746157964626, 141.312842716978 43.0740367219682, 141.31200434567 43.0732884419937, 141.312397350312 43.0730577500174, 141.312584750017 43.0729478845636, 141.312760242944 43.0728449536937, 141.313145012078 43.0726191841114, 141.313381680172 43.0724803234139, 141.313629864333 43.0723347346497, 141.31403175956 43.0720989044896, 141.314376058542 43.0718969224253, 141.315072736429 43.0725009072447, 141.315488020256 43.0728610797948, 141.315892328114 43.0732115965406, 141.315077919085 43.0736873315458, 141.314270729491 43.0741606574094)) ^^http://www.opengis.net/ont/geosparql#wktLiteral