メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.146287614617 35.079334669406, 137.146138541021 35.080471325748, 137.146107038752 35.0804504728672, 137.145732368035 35.0804009534598, 137.145087892213 35.0802643295064, 137.144859833206 35.0802439275205, 137.145243076584 35.079694118864, 137.145354248923 35.0796518867244, 137.146287614617 35.079334669406)) ^^http://www.opengis.net/ont/geosparql#wktLiteral