メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.349956001278 43.078504832409, 141.350773951961 43.078632797848, 141.350650924822 43.0792052220782, 141.350519191548 43.0797757475637, 141.348900961986 43.0795627072886, 141.349039718041 43.0789852052198, 141.349196246609 43.0784191658984, 141.349875191801 43.0784935772562, 141.349956001278 43.078504832409)) ^^http://www.opengis.net/ont/geosparql#wktLiteral