メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.630289917089 35.3587015592757, 136.630037372141 35.3587000149431, 136.629166667794 35.3587127641861, 136.629179882216 35.3583138797499, 136.629178091491 35.3582144347877, 136.629656889331 35.3582217750691, 136.629656647509 35.3582583233821, 136.629872545426 35.358257381807, 136.629874336864 35.3583438681475, 136.630304461253 35.3583478914678, 136.630289917089 35.3587015592757)) ^^http://www.opengis.net/ont/geosparql#wktLiteral