メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.751811009014 35.2619133990946, 136.751538235124 35.262081279074, 136.75125032664 35.2622283322352, 136.750791467247 35.2620100132037, 136.751115269154 35.2615535744453, 136.751546667597 35.261727080085, 136.751811009014 35.2619133990946)) ^^http://www.opengis.net/ont/geosparql#wktLiteral