メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.561193563093 36.5163344441032, 136.560199385377 36.5164042789148, 136.559001662489 36.5164735896752, 136.558959967418 36.5161050084242, 136.558915963205 36.515758664358, 136.558967038056 36.5151604313081, 136.559631312287 36.5151480826356, 136.561072692149 36.5151652539136, 136.56107959424 36.5151861987412, 136.561153118727 36.5157700337733, 136.561193563093 36.5163344441032)) ^^http://www.opengis.net/ont/geosparql#wktLiteral