メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.929529910892 35.1221254662303, 136.930474914811 35.1221954326864, 136.930456962762 35.1223716751191, 136.930410579733 35.1227976641482, 136.930389164594 35.123037705912, 136.930366615082 35.1232249252865, 136.928999822281 35.1231209510981, 136.92809079477 35.1230487898796, 136.928111321958 35.1228660739452, 136.928144419369 35.1226273241093, 136.928189480539 35.1222102087538, 136.928205788889 35.1220338233829, 136.929529910892 35.1221254662303)) ^^http://www.opengis.net/ont/geosparql#wktLiteral