claim: China is incapable of being the world's largest by purchasing power parity.
evidence: Gibidumsee may refer to two lakes in the canton of Valais , Switzerland  :. Gebidumsee , a natural lake at Visperterminen. Gebidumsee. Gebidumsee. Stausee Gibidum -LRB- `` Stausee Gebidem '' -RRB- , a reservoir at Naters. Stausee Gibidum. Stausee Gibidum