メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.745245536876 35.4155802562909, 136.74520916098 35.4158431162082, 136.745180330636 35.4160856148488, 136.743154684605 35.4153478476275, 136.743255669375 35.4151591925319, 136.74336015886 35.4149662184424, 136.745063057912 35.4155776125133, 136.745245536876 35.4155802562909)) ^^http://www.opengis.net/ont/geosparql#wktLiteral