メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.752232776159 35.4023545064121, 136.752466703092 35.4030873418519, 136.751788181141 35.4032398779046, 136.751567493614 35.4024922984305, 136.751361131342 35.4018282180481, 136.752053486062 35.4017100255202, 136.752116408243 35.4019432671882, 136.752232776159 35.4023545064121)) ^^http://www.opengis.net/ont/geosparql#wktLiteral