メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.332915065175 43.7529658956201, 142.332920654842 43.7529563990383, 142.33347193261 43.7531197244775, 142.333461982184 43.7531365205323, 142.333502382478 43.7531498353033, 142.33382207223 43.7532550463714, 142.333178744618 43.7543681710335, 142.332865918389 43.7542636352864, 142.332859179407 43.754275436975, 142.332269851731 43.7540898440229, 142.331536848608 43.7538610844026, 142.33220311976 43.7527564464647, 142.332915065175 43.7529658956201)) ^^http://www.opengis.net/ont/geosparql#wktLiteral