メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.20820572504 34.6970625788194, 135.208420328555 34.6972300621174, 135.208676074325 34.6974175321857, 135.208330076431 34.6979879513094, 135.207806696629 34.6977798678303, 135.207132658093 34.6975165219657, 135.207277532874 34.697281097344, 135.20762597905 34.6966836191045, 135.20820572504 34.6970625788194)) ^^http://www.opengis.net/ont/geosparql#wktLiteral