メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.985158239994 34.9026106326823, 136.985858814444 34.9026654135205, 136.98596631421 34.9041813405017, 136.985100580303 34.9041810369046, 136.984832120557 34.9041826084192, 136.984130174979 34.9041856408418, 136.984352689711 34.9032495538395, 136.984525363673 34.9025691190122, 136.985158239994 34.9026106326823)) ^^http://www.opengis.net/ont/geosparql#wktLiteral