メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> MULTIPOLYGON(((139.84802571378 38.7815111473392, 139.849866431356 38.781616299571, 139.849756033997 38.7826113807742, 139.847901308013 38.7824834474799, 139.84802571378 38.7815111473392)), ((139.850825911262 38.7888580766561, 139.849063536465 38.788731366059, 139.847164145677 38.7886033327007, 139.847364966259 38.7865634682114, 139.849578176602 38.7866942795931, 139.851014017687 38.7867933297417, 139.850878225214 38.7883350379098, 139.850825911262 38.7888580766561))) ^^http://www.opengis.net/ont/geosparql#wktLiteral