メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.392881619141 44.188895619035, 142.393565874348 44.1890073753941, 142.393874072005 44.1890577232809, 142.393998404548 44.189028490454, 142.394010842192 44.1890239926172, 142.394483275235 44.1889137587983, 142.395456547262 44.1890527404211, 142.395022393559 44.1903983837077, 142.394875039289 44.1904254830133, 142.393873581878 44.1906681389333, 142.39258420757 44.1910205376315, 142.391279442382 44.1893015144394, 142.391473855344 44.1886724735691, 142.392248023991 44.1887951849764, 142.392881619141 44.188895619035)) ^^http://www.opengis.net/ont/geosparql#wktLiteral