メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.755143763574 35.4465474847069, 136.754421695872 35.4464432064878, 136.753934989354 35.446372259022, 136.753612253294 35.4463364795369, 136.753284026869 35.4463310653014, 136.752918799014 35.4463254536415, 136.752707777705 35.4463369514327, 136.752713887682 35.4460172011247, 136.752976193168 35.4459639442762, 136.753014100758 35.4458037660779, 136.754043776728 35.4459640600887, 136.755234157387 35.4461424251491, 136.755224018578 35.4461815792182, 136.755143763574 35.4465474847069)) ^^http://www.opengis.net/ont/geosparql#wktLiteral