Assertion: onion | /r/MadeOf | potassium
Facets:
Source sentences:
text: It contains sulfuric compounds and quercetin, and minerals such as magnesium, calcium, potassium, sodium, selenium, and phosphorus.
text: Onions contain many important and essential minerals and vitamins, such as vitamins C and B6, calcium, magnesium, and potassium.
text: More than just a tasty culinary plant, the onion contains natural sugar, vitamins A, B6, C and E, minerals such as sodium, potassium, iron and dietary fibre.