メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.346979978142 43.1114234140301, 141.347498390338 43.1114897858634, 141.347941372676 43.1115486034778, 141.347991693775 43.1115535687299, 141.348368650395 43.111604974904, 141.348229104132 43.112170622833, 141.348057402133 43.112866400409, 141.347634836738 43.1128088683807, 141.347198220263 43.112740887312, 141.346679865698 43.1126699435227, 141.346152035065 43.1125965912336, 141.346456811269 43.1113605176157, 141.346979978142 43.1114234140301)) ^^http://www.opengis.net/ont/geosparql#wktLiteral