メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.313461855881 36.7549402901731, 137.312809697555 36.75501212748, 137.311959780663 36.7551350364469, 137.311864298317 36.7551171982507, 137.311894405978 36.7548278593523, 137.311882101078 36.7547469763502, 137.31179193884 36.7541541189475, 137.312439536164 36.7539471817817, 137.312981775198 36.7538148600582, 137.313588531629 36.7536443663407, 137.313821330282 36.7535840242708, 137.313821532656 36.7536895645784, 137.314455307784 36.7537373655186, 137.314262254813 36.7553462606313, 137.314095512718 36.7553275260359, 137.313591662875 36.7552796344271, 137.313461855881 36.7549402901731)) ^^http://www.opengis.net/ont/geosparql#wktLiteral