メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.598343698647 42.63822532761, 141.59780301983 42.6390785205919, 141.598458848628 42.6393178842279, 141.598234870667 42.6396699777872, 141.598017170645 42.640063605223, 141.597458031946 42.6398598177459, 141.596320147378 42.6394791328004, 141.596510702327 42.6391358553248, 141.596577433426 42.6391538203143, 141.596635912937 42.6390549804555, 141.596817232262 42.6387383778524, 141.597350521972 42.6378821936622, 141.597771619689 42.6371405772023, 141.59880993084 42.637470742347, 141.598343698647 42.63822532761)) ^^http://www.opengis.net/ont/geosparql#wktLiteral