メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.686368854467 35.310892131128, 136.685928942736 35.3107577974239, 136.685191992982 35.3105414471177, 136.684477792331 35.310322083402, 136.684456909469 35.3103157334456, 136.684420136749 35.3100620012924, 136.684115923224 35.3090244127608, 136.685694033867 35.3086923420404, 136.685935490124 35.3094794729388, 136.686368854467 35.310892131128)) ^^http://www.opengis.net/ont/geosparql#wktLiteral