メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.343081182047 43.7636192095021, 142.343004118983 43.7637571205526, 142.342814453351 43.764106227272, 142.34146155218 43.7636916136067, 142.341737895928 43.7632177056224, 142.342033918988 43.762741600843, 142.342011821983 43.7627348851656, 142.34230338384 43.7622520856263, 142.343629517188 43.7626645499541, 142.343081182047 43.7636192095021)) ^^http://www.opengis.net/ont/geosparql#wktLiteral