メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.042726599946 35.1976110656686, 137.043074049395 35.1977084008173, 137.043664364274 35.1978807057132, 137.043928473056 35.1972882204415, 137.045615062032 35.1977829875754, 137.045257861212 35.1985763011724, 137.044887069316 35.1994249531633, 137.044689819167 35.1999658888505, 137.043519361776 35.1996179848283, 137.041222843207 35.1989391617143, 137.041608913488 35.1980531435553, 137.041895100918 35.1973788528245, 137.042726599946 35.1976110656686)) ^^http://www.opengis.net/ont/geosparql#wktLiteral