メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.949052633182 35.2239341577152, 136.949795450375 35.224010763025, 136.95062807076 35.2241080859204, 136.950637204755 35.2245468110891, 136.950651337213 35.2249131541839, 136.949710137645 35.2249615472159, 136.948969675287 35.2248922707162, 136.947438681134 35.2247116420038, 136.946745380695 35.2246994815057, 136.94677331997 35.2237052098532, 136.947488978563 35.2237781851781, 136.949052633182 35.2239341577152)) ^^http://www.opengis.net/ont/geosparql#wktLiteral