メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.651849992929 35.3591700802705, 136.651696383541 35.3607329921671, 136.650215400928 35.3606645281642, 136.650237335228 35.3603506130691, 136.650365251577 35.3590689251799, 136.650416471231 35.358549081418, 136.650749468553 35.3554577315176, 136.650759658371 35.3551110196444, 136.651259005095 35.3551440545465, 136.652256391787 35.3551991263924, 136.651952367308 35.3581368704982, 136.651849992929 35.3591700802705)) ^^http://www.opengis.net/ont/geosparql#wktLiteral