メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.72860879268 35.1852361106536, 136.72862337404 35.1859721382567, 136.72906116632 35.1859707676629, 136.728862321713 35.186355463889, 136.727926992256 35.1863491123092, 136.727590907008 35.186347890968, 136.727394728002 35.1863471776184, 136.727385123623 35.1849110379031, 136.727387293875 35.1845074609186, 136.727749145431 35.184501381727, 136.728611546344 35.1844986666359, 136.72860879268 35.1852361106536)) ^^http://www.opengis.net/ont/geosparql#wktLiteral