メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.577450115255 35.6610983540462, 138.578186139869 35.6609650993663, 138.578358738012 35.6609351283873, 138.578459818733 35.6613800743715, 138.578553732619 35.6617637253259, 138.57860221561 35.6620526577014, 138.578628648772 35.6620830261524, 138.578659492291 35.6621238132543, 138.57868599298 35.6621508718496, 138.578362487987 35.6622968166353, 138.578374462219 35.6623190958729, 138.578507743776 35.662576319504, 138.577553524408 35.6633351414513, 138.577027701962 35.6637629225896, 138.576775814048 35.6639580382008, 138.576448722748 35.6642227742143, 138.576079509137 35.6645100705717, 138.5759661195 35.6643779310063, 138.575667366399 35.6639854301975, 138.575415776764 35.6636483896515, 138.57528738219 35.6634841483037, 138.575110800518 35.663336133581, 138.575094991638 35.6633228691968, 138.574945587553 35.6627286663844, 138.574674112313 35.6615787254311, 138.574416455201 35.6604436350798, 138.575811277212 35.6602089996987, 138.577184258018 35.6599877410907, 138.577450115255 35.6610983540462)) ^^http://www.opengis.net/ont/geosparql#wktLiteral