メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.390258872837 43.746313169259, 142.390274582072 43.7463780394807, 142.390318682309 43.7469225556935, 142.387845239555 43.7470675171211, 142.387812657341 43.7470872289747, 142.38714444619 43.7464958304522, 142.385791746152 43.7469500195088, 142.385781260078 43.7465501672997, 142.385771586331 43.7465188843729, 142.386506593602 43.746322945758, 142.386362609523 43.7460000583053, 142.387694101361 43.7459407783027, 142.390208513241 43.7458185188797, 142.390222828961 43.7458843395298, 142.390258872837 43.746313169259)) ^^http://www.opengis.net/ont/geosparql#wktLiteral