メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.438641893385 40.6127787169498, 141.437964143888 40.613863814408, 141.436689649829 40.6132527586946, 141.436430535748 40.6131308517935, 141.435989921443 40.612960014551, 141.435425700526 40.6127458521737, 141.435560614748 40.6125411567329, 141.43601411583 40.6118191523749, 141.436081875489 40.611828081451, 141.436155255197 40.6118511948971, 141.438641893385 40.6127787169498)) ^^http://www.opengis.net/ont/geosparql#wktLiteral