Assertion: comfrey's use | /r/HasProperty | medicinal
Facets:
Source sentences:
text: The comfrey used for medicinal use is the common comfrey, Symphytum officinale.
text: Comfrey (also comphrey) is an important herb in organic gardening, having many medicinal and fertiliser uses.
text: Comfrey is well known for its medicinal use and its ability to draw up nutrients from the subsoil.