Assertion: kakadu national park | /r/HasProperty | listed as a unesco site
Facets:
value: in three stages
type: TEMPORAL
Source sentences:
text: Kakadu National Park was listed as a UNESCO site in three stages that took place in 1981, 1987, and the third stage in 1992.
text: Kakadu National Park is listed as a World Heritage Area (listed in 1992) and as a UNESCO site .