Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Wood Buffalo National Park' has mentioned 'World' in the following places:
Occurrence Sentence Text Source
Larger in area than Switzerland,[2] it is the second-largest national park in the world.
[3] The park was established in 1922 to protect the world's largest herd of free roaming [4] wood bison.
The park contains one of the world's largest fresh water deltas, the Peace-Athabasca Delta, formed by the Peace, Athabasca and Birch rivers.
On June 28, 2013, the Royal Astronomical Society of Canada designated Wood Buffalo National Park as Canada's newest and the world's largest dark-sky preserve.
Wood Buffalo National Park contains a large variety of wildlife species, including red fox, bison, moose, great grey owls, black bears, hawks, timber wolves, lynxes, beavers, snowy owls, marmots, bald eagles, martens, wolverines, peregrine falcons, whooping cranes, snowshoe hares, sandhill cranes, ruffed grouses, and the world's northernmost population of red-sided garter snakes, which form communal dens within the park.
In 2007, the world's largest beaver dam xe2x80x93 about 850-metre (2,790xc2xa0ft) in length xe2x80x93 was discovered in the park using satellite imagery.
It sustains the worldxe2x80x99s largest herd of wood bison, a threatened species.
Criterion (vii): The great concentrations of migratory wildlife are of world importance and the rare and superlative natural phenomena include a large inland delta, salt plains and gypsum karst that are equally internationally significant.
Criterion (x): Wood Buffalo National Park contains the only breeding habitat in the world for the whooping crane, an endangered species brought back from the brink of extinction through careful management of the small number of breeding pairs in the park.