メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.337232319575 43.0440256353662, 141.337731087266 43.0440605589486, 141.337661407881 43.0445371906969, 141.337639052982 43.0447644595147, 141.337550476841 43.0454290720234, 141.335866622042 43.0453281391389, 141.335861779993 43.045357146057, 141.335835622162 43.0453558117526, 141.335867951368 43.0450642726556, 141.335914372017 43.044650400837, 141.33595622983 43.044369346155, 141.335982327601 43.0441939414426, 141.336012083729 43.0439528774161, 141.337232319575 43.0440256353662)) ^^http://www.opengis.net/ont/geosparql#wktLiteral