メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.310878124479 42.2858982594273, 143.311451881153 42.2861399831437, 143.310986068631 42.2867535557029, 143.310923542993 42.2868323493372, 143.310332419675 42.2865834681861, 143.308805129688 42.2859407476274, 143.309014249484 42.2859326291269, 143.30902101514 42.2858615266575, 143.309223146295 42.2858094419202, 143.309460935698 42.2857542106667, 143.309794783621 42.2857273563857, 143.310144940477 42.2857241226914, 143.310487540614 42.2857447325804, 143.310528662438 42.2857509647116, 143.310878124479 42.2858982594273)) ^^http://www.opengis.net/ont/geosparql#wktLiteral