Assertion: buckwheat's leaf | /r/HasProperty | simple
Facets:
Source sentences:
text: The leaves of Polygonaceae are simple, and arranged alternately on the stems.
text: Leaf is simple and petiolate, leaf blade is ovate-triangular, 2–8 cm long, and tip acuminate, leaf base is cordate or hastate, and upper leaves are small and sessile.