Assertion: russian comfrey | /r/CapableOf | become popular
Facets:
value: in europe
type: LOCATION
value: increasingly
type: DEGREE
value: in the united states
type: LOCATION
Source sentences:
text: Russian comfrey, which has become increasingly popular in the United States and Europe, is called S. X uplandicum (but used to be known as S. Pergrinum).