メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.292850700702 43.0785979816376, 141.293327040816 43.0790241489978, 141.293786703154 43.0794311850518, 141.293749222936 43.0794537293143, 141.293424232567 43.0796468107135, 141.293394406288 43.0796645666625, 141.293207086509 43.0797841069984, 141.293153705072 43.0798172784206, 141.292870725269 43.0795610955522, 141.292846790521 43.0795393740832, 141.292673633479 43.0793962842423, 141.292204448834 43.0789727765567, 141.290985077179 43.0778619188324, 141.291489602084 43.0775744883388, 141.291652011022 43.0774894841823, 141.292038289754 43.0778389468095, 141.292515806359 43.0782751135477, 141.292850700702 43.0785979816376)) ^^http://www.opengis.net/ont/geosparql#wktLiteral