メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.928999822281 35.1231209510981, 136.930366615082 35.1232249252865, 136.93033478211 35.123532838075, 136.930321039985 35.1236307040689, 136.93031566537 35.1236885833937, 136.930267599525 35.1240517487684, 136.928914862211 35.1239511088559, 136.92800876724 35.1238769801883, 136.928049923852 35.1234617585457, 136.92809079477 35.1230487898796, 136.928999822281 35.1231209510981)) ^^http://www.opengis.net/ont/geosparql#wktLiteral