Assertion: buckwheat | /r/HasProperty | annual herb
Facets:
Source sentences:
text: Buckwheat is an annual herb native to central, and northern Asia, and later introduced to Europe in middle ages.
text: Buckwheat is an annual plant which measures ½ to 2½ feet tall.
text: This buckwheat is an annual herb growing up to a meter in height with a slender flowering stem.
text: But it is an annual plant that grows very quickly up to 60cm high, with alternate, very distinctive, heart-arrow shaped leaves, whose stipules grow into collar shape with the growing point on the stem being the enveloping "Ochrea" (bag).