メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.95266084836 35.1446724173746, 136.95283257566 35.1448471591342, 136.951769774813 35.1456879067711, 136.951640198475 35.1454761251663, 136.95131713908 35.1449670229657, 136.950936508677 35.1443293654109, 136.951992580105 35.1439615798696, 136.952280800023 35.1442681503313, 136.95266084836 35.1446724173746)) ^^http://www.opengis.net/ont/geosparql#wktLiteral