メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.985858814444 34.9026654135205, 136.985158239994 34.9026106326823, 136.984525363673 34.9025691190122, 136.984725042257 34.9013742420198, 136.984887510632 34.9008500020349, 136.985742168214 34.9008269101219, 136.985759144157 34.9009507484447, 136.985858814444 34.9026654135205)) ^^http://www.opengis.net/ont/geosparql#wktLiteral