メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.160618812547 34.6868594155542, 135.160324321692 34.6867060526722, 135.16007029574 34.6865746698663, 135.159982656527 34.6865414596518, 135.159944259716 34.6865214371258, 135.159884567355 34.6862806960491, 135.160246915033 34.685953700734, 135.160969784756 34.6862124701605, 135.160618812547 34.6868594155542)) ^^http://www.opengis.net/ont/geosparql#wktLiteral