メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.222954421505 36.6901092192704, 137.223118159268 36.6901572996921, 137.22309974873 36.6902933318153, 137.2229963791 36.6904773489571, 137.222903642103 36.6905751155568, 137.222702368119 36.6906971514762, 137.222337483984 36.6908595355135, 137.221521706183 36.6911477316761, 137.221515417117 36.6910724008113, 137.221499746688 36.6909594767899, 137.221480974162 36.6908616238407, 137.221348297639 36.6905442278295, 137.22130434331 36.690099990261, 137.221286435918 36.6899892517266, 137.222328365651 36.6899464553238, 137.222954421505 36.6901092192704)) ^^http://www.opengis.net/ont/geosparql#wktLiteral