メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.242246331443 43.1131882560168, 141.242663317977 43.113482242752, 141.241700893057 43.1139065731143, 141.241534862034 43.1139798000236, 141.240990860069 43.1142299482037, 141.240367592588 43.1138007931748, 141.2403110426 43.113754510794, 141.24023113478 43.1136984576624, 141.239994635508 43.1135093668423, 141.240592845208 43.1130214280746, 141.241275538873 43.1124973769479, 141.241612240519 43.1127343269254, 141.241936582896 43.1129699013866, 141.242246331443 43.1131882560168)) ^^http://www.opengis.net/ont/geosparql#wktLiteral