メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.963835264879 44.5819038983968, 142.964312232187 44.5822709592663, 142.964370365596 44.5823184759161, 142.964334098844 44.5823573038081, 142.962856457493 44.5839396358775, 142.962197405079 44.5836228847375, 142.961560973728 44.5833170279709, 142.96363393415 44.5811450364148, 142.963657334727 44.5811198605211, 142.964292217572 44.5814488120263, 142.964124810946 44.5816000385752, 142.963835264879 44.5819038983968)) ^^http://www.opengis.net/ont/geosparql#wktLiteral