メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.142581765052 38.9260734647704, 141.141824386173 38.9269312962149, 141.141685390949 38.9268709248462, 141.140049632353 38.925982444365, 141.139657809202 38.9257790149543, 141.139601165964 38.925749392078, 141.140412691925 38.9248617318609, 141.140793479569 38.9244414730908, 141.141195260409 38.923991245093, 141.141947106653 38.9231672145875, 141.142742014636 38.9236024613579, 141.144124639738 38.924362216084, 141.143780088248 38.9247451591867, 141.143724476495 38.9248124499445, 141.14336729766 38.9252140761076, 141.142581765052 38.9260734647704)) ^^http://www.opengis.net/ont/geosparql#wktLiteral