メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.691222217175 35.3154537474684, 136.69071427223 35.3156338075419, 136.690456409066 35.31576089832, 136.69021385549 35.3158632594303, 136.690153101796 35.3159084447478, 136.689853805321 35.3162212878993, 136.68973857937 35.3163390764373, 136.688578048919 35.3154353675641, 136.688426764605 35.3154389290372, 136.688293528412 35.3153325605433, 136.688323501483 35.3153055657077, 136.689571054679 35.3142115817207, 136.690535167251 35.3149254262527, 136.691222217175 35.3154537474684)) ^^http://www.opengis.net/ont/geosparql#wktLiteral