Assertion: buckwheat | /r/HasProperty | cultivated in china
Facets:
value: 5000–6000 years ago
type: TEMPORAL
value: for about 1, 500 years
type: TEMPORAL
Source sentences:
text: Buckwheat has been cultivated in China for about 1, 500 years, and was introduced to Europe (via Germany) in the fifteenth century, and arrived in England about AD 1600.
text: Buckwheat was cultivated nearly 5000–6000 years ago in China and it entered Europe through Russia and spread to North America through immigrants .