メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.372017980507 43.7412777868514, 142.372705002512 43.7414878630583, 142.372273534522 43.7422472826683, 142.371824917738 43.7430624143218, 142.371475208613 43.7436786057216, 142.371407778575 43.7438059583525, 142.370912996325 43.7436563989092, 142.370751353019 43.7436075384968, 142.370085226476 43.7434037306273, 142.370526401624 43.7426626056729, 142.370531944121 43.7426518920484, 142.370995935861 43.7418806249515, 142.370983563303 43.7418770700441, 142.37099147273 43.7418619244177, 142.371396047853 43.7410880479714, 142.372017980507 43.7412777868514)) ^^http://www.opengis.net/ont/geosparql#wktLiteral