メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.386164677673 42.9772884838152, 144.385961354004 42.9775792124947, 144.385842705867 42.9777484543306, 144.385021675644 42.9780962187383, 144.385021391791 42.9778723032197, 144.38495190308 42.9778736003608, 144.384633320227 42.9777676564943, 144.385005229709 42.9772117450972, 144.385027071819 42.97720085932, 144.385575886275 42.9764322843928, 144.386164677673 42.9772884838152)) ^^http://www.opengis.net/ont/geosparql#wktLiteral