メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.447292111569 36.4071594192296, 136.447007204786 36.4070727069811, 136.446773678328 36.4070586847662, 136.446825079445 36.406481706179, 136.446860546219 36.4060833800004, 136.447152458173 36.4061040259497, 136.44714773971 36.4061953074873, 136.447381298388 36.4062061684034, 136.447381250149 36.4062869874519, 136.447292111569 36.4071594192296)) ^^http://www.opengis.net/ont/geosparql#wktLiteral