メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.294529178527 43.066997807916, 141.294851503024 43.0672557920864, 141.295281361397 43.0676126413698, 141.294364489549 43.0681022834142, 141.293880561109 43.0683728752105, 141.293471528362 43.0686015427241, 141.293451402305 43.0686126973347, 141.293014888577 43.0682768836824, 141.29295976855 43.0682314121951, 141.292588320336 43.0679249061992, 141.293043765935 43.0676848156566, 141.293524838517 43.0674311527101, 141.29314114463 43.0671042201878, 141.293593311355 43.0668584739682, 141.294055681021 43.0666102790254, 141.294529178527 43.066997807916)) ^^http://www.opengis.net/ont/geosparql#wktLiteral