メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.154983475721 35.0893568790024, 137.153799403881 35.0895474427519, 137.153740322304 35.0891756509476, 137.153592335029 35.0891706304991, 137.153484169443 35.0884747290446, 137.153805404562 35.0884257555411, 137.154741117175 35.0882994608477, 137.154983475721 35.0893568790024)) ^^http://www.opengis.net/ont/geosparql#wktLiteral