メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.612520665455 34.616829566754, 135.61049759288 34.6168397513272, 135.610508901 34.6158483944746, 135.610508529414 34.6158183897329, 135.610496802019 34.6148524560801, 135.612339611912 34.6148132445682, 135.612403616501 34.6154873358771, 135.612460172555 34.6161509791512, 135.612520665455 34.616829566754)) ^^http://www.opengis.net/ont/geosparql#wktLiteral