メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.344897711649 37.3734270009434, 140.343964996852 37.3737435880713, 140.343718567586 37.373726908903, 140.343472272881 37.3737234622892, 140.343248021301 37.3736797924069, 140.342844323983 37.373578744256, 140.3443140432 37.3732104330231, 140.344628454543 37.3733476239807, 140.344897711649 37.3734270009434)) ^^http://www.opengis.net/ont/geosparql#wktLiteral