メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.355552955851 43.8102928557496, 142.356071549069 43.8099320512608, 142.358015786984 43.8113676727923, 142.359375112003 43.8123338451271, 142.358864651165 43.8127083657734, 142.358373117608 43.8130730757752, 142.357849139269 43.8134495757559, 142.357357577669 43.8138064600521, 142.356649869689 43.8133023998079, 142.356017181677 43.8128422192124, 142.354024277275 43.8114144335224, 142.354526645066 43.8110458107273, 142.355056038175 43.8106693206746, 142.355552955851 43.8102928557496)) ^^http://www.opengis.net/ont/geosparql#wktLiteral