メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.748757153514 35.4085423739833, 136.747786780543 35.4087355722686, 136.747792971652 35.408702706473, 136.747453445783 35.4086999138537, 136.74744840694 35.4085351116948, 136.747443232335 35.4079140501931, 136.747449096534 35.4074454895703, 136.747842630476 35.407448609655, 136.748482012506 35.4073553950051, 136.748606728141 35.4079060947123, 136.748757153514 35.4085423739833)) ^^http://www.opengis.net/ont/geosparql#wktLiteral