メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.137299302701 42.7041623016131, 143.13610001822 42.7046587009043, 143.136056234759 42.704597566998, 143.135543064331 42.7038990394472, 143.136077064155 42.703608518402, 143.136689915801 42.7032906584291, 143.137232497318 42.7040718066576, 143.137288897988 42.704148174967, 143.137299302701 42.7041623016131)) ^^http://www.opengis.net/ont/geosparql#wktLiteral