メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.399177962312 44.170112060439, 142.397285093715 44.1698214421717, 142.39750801754 44.1690705423395, 142.397511227771 44.1690601840052, 142.398389329976 44.1691977191665, 142.399392321121 44.1693449623243, 142.39941257596 44.1693479241597, 142.399177962312 44.170112060439)) ^^http://www.opengis.net/ont/geosparql#wktLiteral