Assertion: black footed ferret | /r/HasProperty | one of the first
Facets:
value: in 1973
type: TEMPORAL
Source sentences:
text: This black-footed ferret is one of the first to step onto Canadian soil after over 70 years when the last one was seen (courtesy Toronto Zoo).
text: In 1973, the black-footed ferret was one of the first species to be put on the current Endangered Species List.