Assertion: gibbon | /r/HasProperty | found over the entirety of hainan island
Facets:
value: in the 1950s
type: TEMPORAL
Source sentences:
text: While in the 1950s, more than 2,000 gibbons were found over the entirety of Hainan Island, a study in 2003 found 13 total gibbons split into two groups and two lone males, and in 2004 only 12-19 Hainan gibbons were found exclusively in the Hainan Bawangling National Nature Reserve.