Assertion: hyena's range | /r/CapableOf | decline since their heyday
Facets:
value: greatly
type: DEGREE
value: due to competition from canids
type: CAUSE
value: in part
type: OTHER
Source sentences:
text: Animals in the Hyaenidae family at one point extended as far as North America, with a great deal of diversity between species, but their range and diversity have greatly declined since their heyday over one million years ago, in part due to competition from canids.