メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.227134900956 36.6837838657912, 137.227921146178 36.6838259885398, 137.229072603101 36.6838752362443, 137.229184275812 36.6838848941702, 137.229709452453 36.6839162287089, 137.229746116793 36.6844631149895, 137.229689474908 36.6851418507732, 137.229042120483 36.6851753520579, 137.228553013619 36.6852010948923, 137.227953903409 36.6851690183695, 137.227636986061 36.6851472860837, 137.22679694727 36.6850437242754, 137.22640417177 36.6850100575024, 137.226600978247 36.6841365841242, 137.2266660107 36.6837656578248, 137.227134900956 36.6837838657912)) ^^http://www.opengis.net/ont/geosparql#wktLiteral