Assertion: carioca | /r/UsedFor | refer to the carioca river
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text: Some sources claim that, contrary to the above story, the term Carioca referred to the Carioca river, which was the river that supplied drinking water to the population, and with the construction of the Carioca Aqueduct (nowadays, Arcos da Lapa or Lapa arches) dazzled the natives and Europeans that arrived here.