Assertion: buckwheat | /r/HasProperty | characterized by trigonal shape
Facets:
Source sentences:
text: Buckwheat is characterized by trigonal shape, which makes it unique.
text: Buckwheat (Fagopyrum esculentum Moench), also known as black wheat, is a fruit, an achene, (like sunflower seeds) which is characterized by its trigonal shape, belonging to the botanical family of Polygonaceae.