メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.721632240821 35.2344474492478, 136.720841900294 35.2346262074131, 136.720818650782 35.2344118113902, 136.72081335472 35.2341395900318, 136.720831215284 35.2336503956628, 136.720933191799 35.2327595767226, 136.721527633285 35.2327960345554, 136.722246443753 35.2329745668638, 136.722420178447 35.2329961101751, 136.722582479975 35.2329890893685, 136.722526538365 35.2332618652446, 136.722322223541 35.234168379473, 136.721593587907 35.2343027214074, 136.721632240821 35.2344474492478)) ^^http://www.opengis.net/ont/geosparql#wktLiteral