メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.549212406751 43.2368776719867, 143.547995638134 43.2369299159406, 143.547990688204 43.2368508524675, 143.547682924808 43.2336865331877, 143.547797162464 43.2336261582241, 143.546868040404 43.2323583571988, 143.54680190258 43.2319384037639, 143.548242444045 43.2312908271919, 143.548543332518 43.2340724161702, 143.54897478777 43.234061598333, 143.549007894679 43.2347459404542, 143.549182373836 43.2367908056472, 143.549207175842 43.2367901011198, 143.549212406751 43.2368776719867)) ^^http://www.opengis.net/ont/geosparql#wktLiteral