Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Iguaçu National Park' has mentioned 'Yellowstone National Park' in the following places:
Occurrence Sentence Text Source
These were the words used by Andrxc3xa9 Rebouxc3xa7as, an engineer, in his book "Provinces of Paranxc3xa1, Railways to Mato Grosso and Bolivia", which started up the campaign aimed at preserving the Iguaxc3xa7u Falls way back in 1876, when Yellowstone National Park, the first national park on the planet, was four years old.