メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.311409524314 42.2852024898338, 143.311983614851 42.285441816045, 143.311492198347 42.2860869971311, 143.311451881153 42.2861399831437, 143.310878124479 42.2858982594273, 143.310528662438 42.2857509647116, 143.310487540614 42.2857447325804, 143.310144940477 42.2857241226914, 143.3107827849 42.2849414208667, 143.311409524314 42.2852024898338)) ^^http://www.opengis.net/ont/geosparql#wktLiteral