Assertion: period | /r/CapableOf | vary in length
Facets:
value: from about 2 to 7 days
type: TEMPORAL
Source sentences:
text: It’s normal for your periods to vary in length, heaviness, and level of discomfort.
text: Most periods vary somewhat, the flow may be light, moderate or heavy and can vary in length from about 2 to 7 days; with age, the cycle usually shortens and becomes more regular.
text: It might also vary in length.