メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.864640676864 43.3396946888231, 141.863882966902 43.3398188678113, 141.862655549678 43.3400081253849, 141.862503950138 43.3394674345409, 141.862375796061 43.3390138163341, 141.863585748748 43.3388260488634, 141.864372310425 43.3387170883338, 141.864640676864 43.3396946888231)) ^^http://www.opengis.net/ont/geosparql#wktLiteral