メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.362913905724 38.3494543601791, 140.363712285598 38.3493726750156, 140.36396977079 38.3506467336102, 140.364214345732 38.3518376820481, 140.36344053786 38.3519443862323, 140.362597176553 38.3520389808777, 140.361716466401 38.3521517203488, 140.361642731738 38.3517359968922, 140.361376243083 38.3500840571718, 140.361290265055 38.3496204205505, 140.362094674606 38.3495397563152, 140.362913905724 38.3494543601791)) ^^http://www.opengis.net/ont/geosparql#wktLiteral