メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.385168461636 43.7849451508018, 142.384910886698 43.7851669837152, 142.38463114749 43.7846581761985, 142.384349309006 43.7841418633595, 142.384132247449 43.7837595267925, 142.384344150907 43.7836930021648, 142.384314909356 43.7836327700176, 142.386456650656 43.7830228046721, 142.386756133342 43.7835932566451, 142.385825967101 43.7843871650743, 142.385168461636 43.7849451508018)) ^^http://www.opengis.net/ont/geosparql#wktLiteral