メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.348269301979 43.0317026300495, 141.348231317216 43.0320249356005, 141.348188566265 43.0323716087363, 141.347438355783 43.0323153362611, 141.346191318269 43.0322289028459, 141.346199157089 43.0321585642408, 141.346225371322 43.0320053805597, 141.346283933354 43.031575070514, 141.346322728697 43.0312896247411, 141.346369414078 43.0309106319532, 141.347268655852 43.0309685083924, 141.34746878635 43.0309776823897, 141.347605880399 43.0309838976851, 141.347921491455 43.0310022816932, 141.348351865693 43.031019880411, 141.348269301979 43.0317026300495)) ^^http://www.opengis.net/ont/geosparql#wktLiteral