メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.311967603812 42.284505345601, 143.312556021446 42.2847518516128, 143.312045156822 42.2853609207866, 143.311983614851 42.285441816045, 143.311409524314 42.2852024898338, 143.3107827849 42.2849414208667, 143.310846363254 42.2848634622855, 143.311349332367 42.2842463135004, 143.311440150672 42.2842842985846, 143.311967603812 42.284505345601)) ^^http://www.opengis.net/ont/geosparql#wktLiteral