Assertion: comfrey's leaf | /r/HasProperty | useful addition
Facets:
value: to compost
type: TRANSITIVE-OBJECT
Source sentences:
text: The leaves are a useful addition to compost or used as mulch, as they contain silica, nitrogen, magnesium, calcium, potassium and iron.
text: The leaves are a useful addition to compost or used as mulch, as they contain silica, nitrogen, magnesium, calcium, potassium and iron.