Assertion: viper's population | /r/CapableOf | exist as invasive species
Facets:
value: since the late 1990s
type: TEMPORAL
value: in the everglades national park
type: LOCATION
value: in the united states
type: LOCATION
Source sentences:
text: In the United States, an introduced population of Burmese pythons, Python bivittatus, has existed as an invasive species in the Everglades National Park since the late 1990s.