Assertion: flax's lignan | /r/HasProperty | a type of phytoestrogen
Facets:
Source sentences:
text: Flaxseed is the richest dietary source of lignans, a type of phytoestrogen (somewhat similar to the female hormone estrogen).
text: The lignans contained in flax are a type of phytoestrogens, which are used to balance hormone levels in women with PMS or approaching menopause.