Assertion: water pepper | /r/HasProperty | annual herb
Facets:
value: with an erect stem
type: OTHER
Source sentences:
text: Water pepper is an annual herb with an erect stem growing to a height of 20 to 70 cm (8 to 28 in).
text: Water pepper is an annual plant and a member of the knotweed or buckwheat Family (Polygonaceae).