メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.740152872813 35.4126580676559, 136.739979404219 35.4126362938075, 136.739735921121 35.4125890977419, 136.738832887079 35.4123978824445, 136.738905931022 35.4121910685291, 136.738987889027 35.4119659771535, 136.740286931753 35.4122080597934, 136.740316160077 35.4122686530027, 136.740247210046 35.4124335814591, 136.740152872813 35.4126580676559)) ^^http://www.opengis.net/ont/geosparql#wktLiteral