メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.80350497005 35.3310579342158, 136.803193334298 35.3315170168111, 136.801592101206 35.3314063431254, 136.801560171047 35.3313594140302, 136.801484660968 35.3310650180294, 136.801503697577 35.3308045728624, 136.802039823494 35.3308458400113, 136.802169993521 35.3298083061865, 136.803629790577 35.3299293225707, 136.80350497005 35.3310579342158)) ^^http://www.opengis.net/ont/geosparql#wktLiteral