メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.429789882907 43.0548792787489, 141.429843569706 43.0557955720817, 141.429890488645 43.0564783917931, 141.429896492601 43.0566613642774, 141.429512188615 43.0565753416468, 141.429460457365 43.0565637183112, 141.42858115181 43.0563987097618, 141.428537745536 43.0563905638532, 141.427591652432 43.0562090752507, 141.427419929469 43.0561768970513, 141.427644246647 43.0558684919863, 141.428080687088 43.0552450520762, 141.428434847389 43.0547356598686, 141.428465451227 43.0546917115377, 141.42886594738 43.0541159768902, 141.429079981711 43.0538081283192, 141.429281491537 43.0537995149513, 141.429707792693 43.0537841418023, 141.429789882907 43.0548792787489)) ^^http://www.opengis.net/ont/geosparql#wktLiteral