メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.630313350405 35.3362976815155, 136.628933015286 35.3363563366202, 136.62827840523 35.3346802941325, 136.627957319173 35.3338423346201, 136.627469405769 35.3325953303562, 136.626614990494 35.3305233284842, 136.626416939412 35.3299449931663, 136.626371637486 35.3297793728315, 136.626368660933 35.3294969009513, 136.630186446276 35.3294617809941, 136.630198222213 35.3304762466777, 136.630226113442 35.3315230371507, 136.630297649441 35.3351874259757, 136.630313350405 35.3362976815155)) ^^http://www.opengis.net/ont/geosparql#wktLiteral