メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.263614242582 43.1220679531715, 141.264080406667 43.1224482959527, 141.264494850378 43.1228091331224, 141.264889086472 43.1231432111089, 141.26456879803 43.1233339340346, 141.264165136661 43.123598347037, 141.26351669095 43.1240027874684, 141.263290051558 43.1239340935832, 141.262137931434 43.1235679512437, 141.261564428736 43.1233961854152, 141.260944894591 43.1232093921401, 141.261597666444 43.1228050040771, 141.262987748061 43.1219322409693, 141.263267766178 43.1217559445777, 141.263614242582 43.1220679531715)) ^^http://www.opengis.net/ont/geosparql#wktLiteral