メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.163302170841 34.9718303449148, 137.163329539127 34.972116420919, 137.163367309218 34.9721604388018, 137.163399962694 34.9723877780237, 137.163500637183 34.9732874873908, 137.162012438578 34.9736133054918, 137.161870673398 34.9736449918594, 137.159643239824 34.9741320966584, 137.159214677352 34.972825648426, 137.158830028711 34.9716730854918, 137.161491488845 34.9714396223859, 137.16326367005 34.9712748145713, 137.163277572094 34.9714488405367, 137.163302170841 34.9718303449148)) ^^http://www.opengis.net/ont/geosparql#wktLiteral