メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.922753130634 43.4960075663602, 141.921903310509 43.4961432500908, 141.921797917909 43.4957931066689, 141.921760020789 43.4957408862285, 141.921679123319 43.4956954691292, 141.921593330775 43.4956708888377, 141.921321082311 43.4956979207181, 141.920955240183 43.4957050248458, 141.920995653505 43.4958444236925, 141.920333401987 43.4961098607445, 141.92022180187 43.4955192517049, 141.920869197104 43.495408174235, 141.921425548823 43.4953628682422, 141.922520630542 43.4952136843712, 141.922753130634 43.4960075663602)) ^^http://www.opengis.net/ont/geosparql#wktLiteral