メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.079952230619 43.5397415449654, 142.079777537039 43.5409546515478, 142.078579675111 43.5408290849607, 142.078360546118 43.5408325814518, 142.078453581894 43.5396159412763, 142.078593198224 43.5389572185768, 142.078699631763 43.5387878304991, 142.078745066413 43.5386072374772, 142.079475292903 43.5386428478004, 142.080110618999 43.5386955733337, 142.079952230619 43.5397415449654)) ^^http://www.opengis.net/ont/geosparql#wktLiteral