メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.481291442392 43.4539343155553, 142.481077260993 43.4538412843352, 142.481003753138 43.4538233229597, 142.480724150751 43.4537563385786, 142.480130207356 43.4535939910582, 142.479648422648 43.4534080304173, 142.479153170815 43.4531890068131, 142.479003084744 43.453080266634, 142.479979078618 43.4526083838423, 142.48040903131 43.4524173899112, 142.48133203505 43.4519716265988, 142.481929615046 43.4516939293885, 142.483308888984 43.4510583258004, 142.483811671595 43.4516025382915, 142.484589045464 43.4524439471302, 142.481291442392 43.4539343155553)) ^^http://www.opengis.net/ont/geosparql#wktLiteral