メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.71388123822 35.2424006504313, 136.713309517945 35.2424497968908, 136.713439349263 35.2418704739543, 136.712660071135 35.2413401687364, 136.712192938207 35.2409218700542, 136.714132557072 35.2407011805971, 136.714359488905 35.2423570006273, 136.71388123822 35.2424006504313)) ^^http://www.opengis.net/ont/geosparql#wktLiteral