メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.984267684032 34.8796272698954, 136.983092526596 34.8799223494379, 136.982491494234 34.8800801816546, 136.98237415492 34.8801078228511, 136.982251752734 34.8793502360962, 136.983698389337 34.8788659806002, 136.983956354111 34.8787810111395, 136.984078467698 34.8791246801118, 136.984267684032 34.8796272698954)) ^^http://www.opengis.net/ont/geosparql#wktLiteral