メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.851864053342 35.1577787641122, 136.851890320317 35.1582111610137, 136.85189104456 35.1582456710446, 136.851252662739 35.1582614181513, 136.8512050438 35.1582626328228, 136.84988974766 35.1582961995653, 136.849887808694 35.1582434472514, 136.849886248307 35.1578221716369, 136.849892594996 35.1578221177889, 136.849878061288 35.1574128514267, 136.851163399075 35.1573892054247, 136.851868595209 35.1573732773775, 136.851879833197 35.1577783820178, 136.851864053342 35.1577787641122)) ^^http://www.opengis.net/ont/geosparql#wktLiteral