メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.352555418115 43.7536440367039, 142.353623991178 43.754374260032, 142.353579850769 43.7544092320015, 142.352691771136 43.7550771273103, 142.351734064883 43.7558255428199, 142.350821654445 43.7552233751762, 142.350144530116 43.7547648517328, 142.350661829145 43.7543577776911, 142.350951289518 43.7541240702448, 142.351621424859 43.7536371106663, 142.35171520723 43.7535494589904, 142.352063695583 43.7533040237625, 142.352555418115 43.7536440367039)) ^^http://www.opengis.net/ont/geosparql#wktLiteral