メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.382511516514 43.7664497179978, 142.382523605122 43.7664704482628, 142.382861809652 43.7670356934372, 142.381331360118 43.7674565256659, 142.381326455156 43.76744798732, 142.381008205198 43.7668944771869, 142.380679312284 43.7663365830374, 142.380763424569 43.766308721913, 142.380871783004 43.766272829407, 142.382207671956 43.7659023305333, 142.382511516514 43.7664497179978)) ^^http://www.opengis.net/ont/geosparql#wktLiteral