メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.345948772563 44.4841501123404, 142.345418432586 44.4840219874766, 142.344743178011 44.4838541133461, 142.344762878658 44.483812612396, 142.345199924623 44.4828845108127, 142.34577950207 44.483015830405, 142.345748803492 44.48307959414, 142.346379754458 44.4832195494778, 142.345964274453 44.484124541134, 142.345948772563 44.4841501123404)) ^^http://www.opengis.net/ont/geosparql#wktLiteral