Assertion: buckwheat's seed | /r/CapableOf | remain viable
Facets:
value: for five years
type: TEMPORAL
value: in the soil
type: LOCATION
Source sentences:
text: Most weeds reproduce primarily from seeds, and the seeds of some weeds can remain viable when buried in the soil for decades.
text: The seed may retain its viability for several years, but seed that is no more than one year old is best to use for planting.
text: About 75 percent of all seeds are initially viable, and seeds can remain viable in the soil for five years.