メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.993847434991 34.9970359520496, 136.993631979227 34.9971184619031, 136.99358168342 34.9966928754234, 136.99353498189 34.9962412366944, 136.993439803877 34.9953393637126, 136.994832814475 34.9952191106612, 136.995056582025 34.9951907679744, 136.995078581171 34.9953708089632, 136.995146617409 34.9955232376564, 136.995245701353 34.9956911346292, 136.995322529355 34.9958037153367, 136.995439034625 34.9959593827231, 136.995708039832 34.9962886561136, 136.993847434991 34.9970359520496)) ^^http://www.opengis.net/ont/geosparql#wktLiteral