メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.160737494787 35.064286339147, 137.160698673223 35.0653042772352, 137.159763098978 35.0652877168387, 137.159779047703 35.0656920359919, 137.159263138143 35.0656657876157, 137.158779578823 35.0656706689567, 137.158747201719 35.0653388861131, 137.158761476854 35.0647200491696, 137.15878464864 35.064607369162, 137.159253605815 35.0646392499235, 137.159371336156 35.064623416845, 137.159720934587 35.0645073877211, 137.159623599147 35.063671556553, 137.160734589574 35.0637137721794, 137.160737494787 35.064286339147)) ^^http://www.opengis.net/ont/geosparql#wktLiteral