Assertion: comfrey | /r/HasProperty | high protein
Facets:
Source sentences:
text: As comfrey is a high protein (22-36%) that also contains vitamin B12, leaves can be a valuable addition to a vegetarian diet, as there are not many plant sources of B12.
text: Comfrey is a high-protein forage that, unlike legumes, obtains all of its nitrogen from the soil.