メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.08073767165 43.5428657291311, 142.07911993871 43.5431104885979, 142.078314505907 43.5432303507192, 142.078205029375 43.542837809609, 142.078002034396 43.5420593615181, 142.078093974553 43.5418106256037, 142.078579675111 43.5408290849607, 142.079777537039 43.5409546515478, 142.080321623764 43.5410324491786, 142.080374746061 43.5413769423593, 142.08073767165 43.5428657291311)) ^^http://www.opengis.net/ont/geosparql#wktLiteral