メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.765778030944 35.3960857072313, 136.765214493822 35.3961572264416, 136.76466167473 35.3962264547565, 136.763671064553 35.39635556753, 136.763573699041 35.3957625000763, 136.764555533837 35.3956324448173, 136.76511123402 35.3955625219961, 136.764959337236 35.3947609664223, 136.765515073096 35.3946909726087, 136.765778030944 35.3960857072313)) ^^http://www.opengis.net/ont/geosparql#wktLiteral