メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.856957229592 37.5194391799257, 139.852262948019 37.5186520144912, 139.85254979425 37.5175968569979, 139.852574909146 37.5173361010674, 139.852622699677 37.5170973061469, 139.852829003336 37.5162627840623, 139.852710397581 37.5153579200301, 139.85278593706 37.5153098958636, 139.854256775637 37.5155703917708, 139.854671887466 37.5140035576337, 139.854983876014 37.512996398518, 139.855366638149 37.5128919972957, 139.859703591405 37.5136291374261, 139.858977937005 37.5163629618835, 139.857803336201 37.5161727203399, 139.856957229592 37.5194391799257)) ^^http://www.opengis.net/ont/geosparql#wktLiteral