メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.58265735534 35.5480320371138, 139.58258727788 35.5480675578106, 139.581764965474 35.548152270863, 139.5814728093 35.5481141946448, 139.581566906271 35.5477221975475, 139.581655092592 35.5477169261599, 139.582211271078 35.5477649922934, 139.582656032504 35.5478629252221, 139.58265735534 35.5480320371138)) ^^http://www.opengis.net/ont/geosparql#wktLiteral