メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.143799928874 37.8568002609592, 139.14453259203 37.8571323101395, 139.145435989188 37.8575260701431, 139.14555079471 37.857573026356, 139.144609493377 37.8589395686071, 139.143186677312 37.85830705126, 139.14286435564 37.8581638005621, 139.142317071893 37.8580678118845, 139.142053083009 37.8579556364019, 139.141895670704 37.8578887763646, 139.142738296912 37.8566623124661, 139.142914605201 37.8564056855098, 139.143388230327 37.8566135749806, 139.143799928874 37.8568002609592)) ^^http://www.opengis.net/ont/geosparql#wktLiteral