メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.374243135856 43.7755009314994, 142.373572048288 43.775700887115, 142.372922589024 43.7745475611443, 142.373524136568 43.7741675007996, 142.374034112657 43.7738380426283, 142.37460577252 43.7734188034505, 142.374824636809 43.7732545075056, 142.375153188663 43.7738688363107, 142.375828641075 43.7750497767858, 142.375069629435 43.7752676817151, 142.374243135856 43.7755009314994)) ^^http://www.opengis.net/ont/geosparql#wktLiteral