メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.870552463652 43.3429654267483, 141.869272154486 43.3431408632915, 141.865821335472 43.3437079853306, 141.8651856147 43.3416544178199, 141.868096959484 43.3412222246424, 141.868135925239 43.3414013376706, 141.868236750412 43.3416076615441, 141.86838599459 43.3417484609677, 141.868529374661 43.3418716591694, 141.869610752623 43.3422938425743, 141.870048078342 43.3424662597565, 141.870347278708 43.3426425781301, 141.870496442745 43.3428008864336, 141.870552463652 43.3429654267483)) ^^http://www.opengis.net/ont/geosparql#wktLiteral