メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.048709742459 37.9058983816566, 139.048298679848 37.9057910522728, 139.048326882654 37.9057305252695, 139.048351774941 37.9056670565648, 139.048551155886 37.905730040489, 139.048697032059 37.9057780719774, 139.048725540462 37.9057887780891, 139.048735912234 37.9058094260691, 139.048732630766 37.9058281645897, 139.048709742459 37.9058983816566)) ^^http://www.opengis.net/ont/geosparql#wktLiteral