メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.36786961891 42.3373523573711, 142.367499942932 42.3377823720206, 142.367151230151 42.3382452842169, 142.36680396103 42.3386779457149, 142.366691586684 42.3386136297812, 142.366342181291 42.3384430611535, 142.365725603696 42.3381357716456, 142.365682720948 42.3381143993784, 142.365842496405 42.3376740533576, 142.365974419621 42.3373042145024, 142.366007286412 42.3372231498956, 142.36642333151 42.3365497163413, 142.366852174249 42.3366626658796, 142.367337415246 42.3368951338329, 142.367368730601 42.3369101546015, 142.367775115899 42.3372681876147, 142.36786961891 42.3373523573711)) ^^http://www.opengis.net/ont/geosparql#wktLiteral