メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.317272613412 42.290523779786, 143.317255263299 42.2906463294389, 143.31713149774 42.2907843563455, 143.317209500804 42.2916731259665, 143.316665374311 42.2914792652698, 143.31602366928 42.2911896663335, 143.316947390105 42.2899738052586, 143.317014979798 42.2899932948356, 143.317227093557 42.2901280600201, 143.317278750515 42.2903148194571, 143.317272613412 42.290523779786)) ^^http://www.opengis.net/ont/geosparql#wktLiteral