Assertion: bse | /r/HasProperty | epidemic
Facets:
value: in the 1980s
type: TEMPORAL
value: in 1990s
type: TEMPORAL
Source sentences:
text: Mad cow disease was an epidemic in the 1980s and 1990s and was one of the worst prion diseases in agriculture history, which raised major concerns in human food and animal feed safety (Gray et al 2012).