メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.37254498564 43.7787473073163, 142.372712798539 43.7790664641202, 142.37296117841 43.7795034842365, 142.373083157462 43.7797015572677, 142.372080702067 43.7803187635091, 142.371763200622 43.7800387914786, 142.371674308599 43.7798767738227, 142.371439223351 43.7794405993526, 142.371432428894 43.7794287400999, 142.371251866945 43.779113603009, 142.371035747336 43.7787005446177, 142.372309666907 43.7783291382175, 142.37254498564 43.7787473073163)) ^^http://www.opengis.net/ont/geosparql#wktLiteral