Assertion: lionfish's population | /r/HasProperty | documented
Facets:
value: particularly well
type: DEGREE
Source sentences:
text: The population on Guam, where it is notorious as an invasive species, is particularly well documented; during the 1970s and 1980s, the snake’s population density on many parts of the island peaked at about 4,600–5,800 per square km (12,000–15,000 per square mile).