メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.804586488511 34.0607084973372, 131.803951815854 34.0609658287979, 131.802772434145 34.0614177773547, 131.802629879327 34.0611477129658, 131.803781767026 34.0606724385358, 131.803751195518 34.060617123608, 131.804036334282 34.0605027331655, 131.804066668095 34.0605638230804, 131.804433470076 34.0604299512923, 131.804586488511 34.0607084973372)) ^^http://www.opengis.net/ont/geosparql#wktLiteral