Assertion: comfrey's healing property | /r/HasProperty | lauded in medical references
Facets:
value: since the first century
type: TEMPORAL
Source sentences:
text: The healing properties of comfrey have been lauded in medical references since the first century A.D. Commonly referred to as knitbone, this herb contains a high concentration of allantoin, a protein that promotes the healing of bruises, sprains and broken bones.