メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.34386252232 43.0514530587089, 141.343799360858 43.051939098975, 141.343709916144 43.0525622153681, 141.343385500782 43.0525350286156, 141.342919659544 43.0525124168903, 141.342947111152 43.052309100155, 141.342302188578 43.0523020140086, 141.342365187696 43.0518148482087, 141.342228153673 43.0518013826435, 141.342289994931 43.0514057060969, 141.34231149957 43.0511830721083, 141.34277290105 43.0512134576875, 141.342753425187 43.0513960903588, 141.34386252232 43.0514530587089)) ^^http://www.opengis.net/ont/geosparql#wktLiteral