Assertion: cowpea | /r/CapableOf | provide main source of protein
Facets:
Source sentences:
text: Cowpea ( Vigna unguiculata [L.] Walp.) is one of the most important food and nutritional security crops, providing the main source of protein to millions of people in developing countries.
text: Cowpea ( Vigna unguiculata [L.] Walp.) is one of the most important food and nutritional security crops, providing the main source of protein to millions of people in developing countries.