メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.886574736269 43.0223091775174, 142.886064275671 43.0219848370715, 142.886516607232 43.0215960111056, 142.887024020217 43.0219223352486, 142.886574736269 43.0223091775174)) ^^http://www.opengis.net/ont/geosparql#wktLiteral