メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.879912566399 35.4075315013748, 136.879569883369 35.4077363143332, 136.87929704278 35.407899110546, 136.879218551665 35.4075425958804, 136.879152044151 35.4071542801924, 136.879094440957 35.4068260546652, 136.879082514063 35.4067513801791, 136.879072418569 35.4066998088488, 136.881338185447 35.4060459067058, 136.88167822668 35.4069418265911, 136.881398051234 35.4070160924172, 136.880898401626 35.4071336390937, 136.88040348939 35.4072918985135, 136.880122161323 35.4074294669648, 136.879912566399 35.4075315013748)) ^^http://www.opengis.net/ont/geosparql#wktLiteral