メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.1349729537 42.9799930532695, 144.134888049116 42.9800983284762, 144.134117541777 42.9809259927559, 144.132823482924 42.9794947199426, 144.132100950704 42.9786926183005, 144.13205374487 42.978639733135, 144.132235984706 42.9784470581414, 144.13312218291 42.9780209819811, 144.132815950478 42.9776593254773, 144.133740936659 42.9766532384803, 144.136634687204 42.9781155159211, 144.1349729537 42.9799930532695)) ^^http://www.opengis.net/ont/geosparql#wktLiteral