メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.126504238524 42.9852576913951, 144.125280180877 42.9849418676851, 144.124373839647 42.9846972745198, 144.123068666852 42.9843403468948, 144.123328374863 42.9840538656673, 144.123487057502 42.9838789618533, 144.12400999632 42.9833024211263, 144.124692784582 42.9824701458477, 144.124987749784 42.9826004849421, 144.126023868663 42.9830691236712, 144.127259294617 42.9836275291059, 144.127634168407 42.9838085231171, 144.126504238524 42.9852576913951)) ^^http://www.opengis.net/ont/geosparql#wktLiteral