メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.228208017649 35.2392547328676, 136.227239964692 35.2397658240842, 136.226270354843 35.2402847266912, 136.225363791988 35.2408060403015, 136.224700976192 35.2399580853468, 136.225656074183 35.2394585883379, 136.226645408108 35.2389430342483, 136.227398450888 35.2385169940679, 136.227572199554 35.2384358969515, 136.227663392783 35.2383933337472, 136.227932505119 35.2388157297055, 136.228208017649 35.2392547328676)) ^^http://www.opengis.net/ont/geosparql#wktLiteral