Assertion: comfrey's reputation | /r/CapableOf | take drastic turn
Facets:
value: for the worse
type: PURPOSE
value: in the 1980s
type: TEMPORAL
Source sentences:
text: In the 1980s, comfrey’s benevolent reputation took a drastic turn for the worse when researchers discovered compounds in the plant called pyrrolizidine alkaloids (PAs), which damaged rat livers.