Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Ngorongoro Conservation Area' has mentioned 'World' in the following places:
Occurrence Sentence Text Source
The main feature of the Ngorongoro Conservation Authority is the Ngorongoro Crater, the world's largest inactive, intact and unfilled volcanic caldera.
It is one of the most important prehistoric sites in the world and research there has been instrumental in furthering understanding of early human evolution.
It includes the spectacular Ngorongoro Crater, the world's largest caldera, and Olduvai Gorge, a 14km long deep ravine.
Criterion (viii): Ngorongoro crater is the largest unbroken caldera in the world.
The property is part of the Serengeti ecosystem, one of the last intact ecosystems in the world which harbours large and spectacular animal migrations.