メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.847165874749 35.4375935056907, 136.846959410962 35.4384636724345, 136.846677385923 35.4396564459804, 136.844361986838 35.4392638737014, 136.843612936719 35.4391459997457, 136.842570650945 35.4389599821591, 136.842710913772 35.4384105868565, 136.843169649522 35.4378725695299, 136.843868416535 35.4370530189875, 136.847165874749 35.4375935056907)) ^^http://www.opengis.net/ont/geosparql#wktLiteral