メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.334640341642 43.0695123699774, 141.33431793179 43.0696474212866, 141.333517828204 43.0699733845504, 141.333539049956 43.0699011154014, 141.333759354569 43.0698139154521, 141.333614985075 43.0696076783606, 141.333735186514 43.0692018578414, 141.334494941472 43.0693108375852, 141.334830070291 43.0693523430934, 141.334974845787 43.0693703109778, 141.334640341642 43.0695123699774)) ^^http://www.opengis.net/ont/geosparql#wktLiteral