メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.891945927287 37.4658989741258, 139.894313474013 37.4663008824176, 139.894036313399 37.4673585614487, 139.893521499819 37.4692774840827, 139.893157154992 37.4706200364236, 139.892803407799 37.4719963745304, 139.891627479905 37.4717816808337, 139.89133884853 37.4728694875762, 139.89120237219 37.4733838881555, 139.89106507119 37.4739074423834, 139.890645195312 37.4754462860818, 139.889474521374 37.4752526888654, 139.8894745436 37.4752822559576, 139.884760103563 37.4744484862159, 139.885153662592 37.4729603615052, 139.885288363921 37.4724515986028, 139.885718842401 37.4707818263747, 139.886107063499 37.4693105950844, 139.886516388823 37.4677378351663, 139.887216211544 37.4651181042019, 139.891945927287 37.4658989741258)) ^^http://www.opengis.net/ont/geosparql#wktLiteral