メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.394158427502 44.1701218073369, 142.393334901758 44.1699655034937, 142.392911266109 44.1698888923765, 142.392577539397 44.1698245440198, 142.392697595919 44.1694731814425, 142.392779704347 44.1694829243508, 142.392892558569 44.1691076974626, 142.393128357144 44.1691465692781, 142.393284655752 44.1691795650973, 142.394401523864 44.1693583556873, 142.394158427502 44.1701218073369)) ^^http://www.opengis.net/ont/geosparql#wktLiteral