メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.24982312874 43.1404598926358, 141.249549601926 43.140672431629, 141.249039625311 43.141043748961, 141.248685829587 43.1413841464153, 141.248395317764 43.1416305746244, 141.248078580049 43.1418537044879, 141.2467303765 43.1409415709258, 141.247055430571 43.1406914400348, 141.247338224496 43.1404354540269, 141.24771963181 43.140115696969, 141.24820886945 43.1397323188222, 141.24848074149 43.1395329196623, 141.24982312874 43.1404598926358)) ^^http://www.opengis.net/ont/geosparql#wktLiteral