メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.737835648733 35.3349548205872, 136.735880776447 35.3353241949454, 136.735548933179 35.3341342127003, 136.735233712195 35.332971826782, 136.735904916811 35.3328449731643, 136.736250720322 35.3332190379193, 136.736888256983 35.3339070407437, 136.737209570122 35.3342336192837, 136.737536454454 35.3346043753788, 136.737835648733 35.3349548205872)) ^^http://www.opengis.net/ont/geosparql#wktLiteral