メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.781420423295 35.2488814597404, 136.781115624124 35.2488635861987, 136.780756157122 35.2488424391726, 136.779723447566 35.2487834323452, 136.779285327246 35.2487749157351, 136.779287827549 35.2481311159894, 136.779293194852 35.247257323863, 136.781126411554 35.2472764255115, 136.781435000109 35.2472812125569, 136.781435714103 35.2478489650866, 136.781420423295 35.2488814597404)) ^^http://www.opengis.net/ont/geosparql#wktLiteral