Assertion: buckwheat's seed | /r/CapableOf | turn brown
Facets:
value: after sowing
type: TEMPORAL
value: from green
type: OTHER
Source sentences:
text: Kill within 7 to 10 days after flowering begins, before the first seeds begin to harden and turn brown.
text: For windrowing, filled seed that is turning from green to brown will mature in the swath.
text: These tests were done much earlier, at the onset of flowering (35 days after sowing) and just before the first seed turned brown (55 days after sowing).