メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.995735973251 43.1118152462441, 142.994234709537 43.1120917140193, 142.99308091703 43.1123153383092, 142.992934400672 43.111591601455, 142.992667445969 43.1107790450394, 142.99238144524 43.110101366942, 142.993422311881 43.1098856576982, 142.993482656478 43.1098749976005, 142.994966006201 43.10961342584, 142.995168077362 43.1101795377082, 142.995186085064 43.110231534838, 142.995504932297 43.1111528992732, 142.995497368906 43.1111545662675, 142.995735973251 43.1118152462441)) ^^http://www.opengis.net/ont/geosparql#wktLiteral