メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.562749619884 35.3803452740032, 136.562276707217 35.3829792393796, 136.558669710833 35.3829831594542, 136.558768443561 35.3827453513727, 136.559091767179 35.3824399370978, 136.559037861658 35.3791049814898, 136.560897527291 35.3790887328559, 136.561181427151 35.3790800129838, 136.562109008818 35.3790246523416, 136.562471944002 35.3790020986268, 136.562991925452 35.3790437069298, 136.56288101035 35.3796852456921, 136.562749619884 35.3803452740032)) ^^http://www.opengis.net/ont/geosparql#wktLiteral