Assertion: chronic insomnia | /r/HasProperty | at least three nights
Facets:
value: a week
type: TEMPORAL
value: for a month
type: TEMPORAL
Source sentences:
text: Although the disorder does affect "patients [who] struggle to actually sleep at all", he says, "chronic insomnia is when the symptoms generally last for prolonged periods, so at least three nights a week for a month or longer.