メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.835880162086 43.8000640421024, 143.835847613425 43.8003320931913, 143.832400764272 43.8001387617869, 143.832376992906 43.8003117897191, 143.831923975463 43.8002807257297, 143.828918431461 43.8000831785827, 143.829012001721 43.799316293197, 143.831233559093 43.7987036556289, 143.832148021598 43.7984542917924, 143.832651318349 43.798315116278, 143.836218772831 43.7973286589364, 143.835880162086 43.8000640421024)) ^^http://www.opengis.net/ont/geosparql#wktLiteral