メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.362525493247 43.7390853331242, 142.361853015477 43.7402786650683, 142.361129156307 43.7400621154123, 142.360626364512 43.7399027647936, 142.360835871456 43.739527607705, 142.361282776725 43.7387536532008, 142.361501251634 43.7383752861018, 142.362006345982 43.7374944540277, 142.362512793128 43.7376349312512, 142.362462548572 43.7377392321619, 142.363159744442 43.7379610034236, 142.362525493247 43.7390853331242)) ^^http://www.opengis.net/ont/geosparql#wktLiteral