メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.607528941535 43.2898423968523, 144.606345131653 43.2901044329093, 144.605087343227 43.2903107381949, 144.604623002721 43.2894997682368, 144.604430531002 43.2891523966881, 144.604382988548 43.2890680028875, 144.606670346177 43.2883859085319, 144.606701043329 43.2884379474539, 144.607528941535 43.2898423968523)) ^^http://www.opengis.net/ont/geosparql#wktLiteral