メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.183081051897 42.889736484871, 143.183934184693 42.8902803203144, 143.184269207594 42.8904938624337, 143.184177504419 42.8904891240278, 143.183216837798 42.8904269654252, 143.182969740414 42.8904052720053, 143.18226921688 42.8903603240273, 143.182347968231 42.889930090062, 143.182415167754 42.8893106138384, 143.182666163429 42.8894711141905, 143.183081051897 42.889736484871)) ^^http://www.opengis.net/ont/geosparql#wktLiteral