メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.817443646422 35.3126531031672, 136.817645336827 35.3124024817055, 136.817878180553 35.312098427355, 136.818381423001 35.3123499516429, 136.818500176322 35.3131883389928, 136.8172841997 35.3128232810193, 136.816687158177 35.3126536662138, 136.816788429587 35.3124309255265, 136.817443646422 35.3126531031672)) ^^http://www.opengis.net/ont/geosparql#wktLiteral