メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.998657355102 35.0077879531645, 136.998594538563 35.0081847912912, 136.998050190738 35.0082574118585, 136.997188946166 35.0080125211317, 136.997293443591 35.0077956136397, 136.997330003651 35.0075592422421, 136.997344445952 35.0074658773982, 136.997391312099 35.007160220539, 136.998739449898 35.0072173288928, 136.998659999875 35.0077711950539, 136.998657355102 35.0077879531645)) ^^http://www.opengis.net/ont/geosparql#wktLiteral