メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.035891765142 42.9190646479997, 143.035841381511 42.9194295935789, 143.035784517427 42.919849442213, 143.035645685985 42.9198398430957, 143.034894197406 42.9197872445012, 143.03389882365 42.9197152789403, 143.034065802132 42.9185491602842, 143.035082960085 42.9186162627269, 143.035085875425 42.9185971835697, 143.035860056509 42.9186518753098, 143.0359494671 42.9186582261997, 143.035902847032 42.9189842526316, 143.035891765142 42.9190646479997)) ^^http://www.opengis.net/ont/geosparql#wktLiteral