メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.87583834651 37.5541321523976, 139.8757745515 37.5541006384637, 139.875737505714 37.5538142781352, 139.875645016653 37.5533553239557, 139.875849837522 37.5533306080661, 139.876285942993 37.5532780690398, 139.876489073197 37.5536799587471, 139.875970370013 37.553806868607, 139.876012046812 37.5541151919328, 139.87583834651 37.5541321523976)) ^^http://www.opengis.net/ont/geosparql#wktLiteral