メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.766012281668 35.3973830207733, 136.76608901233 35.3978228489443, 136.766166980963 35.3982124693049, 136.765606348927 35.3982848459223, 136.765458463296 35.3974529550815, 136.764903635202 35.3975349245613, 136.76466167473 35.3962264547565, 136.765214493822 35.3961572264416, 136.765778030944 35.3960857072313, 136.766012281668 35.3973830207733)) ^^http://www.opengis.net/ont/geosparql#wktLiteral