Assertion: baby | /r/CapableOf | sleep about 12 to 16 hours
Facets:
value: by 4 months
type: TEMPORAL
value: a day
type: TEMPORAL
Source sentences:
text: By 4 months, your baby should be sleeping about 12 to 16 hours a day, broken up into two or three daytime naps totaling three to six hours, and then another nine to 11 hours at night.