メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.93074180592 43.8294267310837, 143.931709782043 43.8304131747085, 143.932805403268 43.8315299640058, 143.93230930153 43.831781565027, 143.931902265081 43.8319880059422, 143.930965785509 43.8324629528527, 143.930435764125 43.8327317453868, 143.930068384361 43.8321988743793, 143.929311758127 43.8316617441833, 143.928062363162 43.8307746812107, 143.927700912466 43.8305145894353, 143.928362357548 43.8301871838416, 143.929167121563 43.829788875704, 143.930443421151 43.8291225621344, 143.93074180592 43.8294267310837)) ^^http://www.opengis.net/ont/geosparql#wktLiteral