Assertion: lake trout | /r/AtLocation | yellowstone lake
Facets:
value: illegally
type: MANNER
value: in 1990s
type: TEMPORAL
value: in the 1980s
type: TEMPORAL
Source sentences:
text: The lake trout, introduced to Yellowstone Lake, is one of several aquatic nonnative species having a significant detrimental effect on the park’s aquatic ecology.
text: Lake trout were illegally introduced into Yellowstone Lake in the 1980s and 1990s.