Some societies display a fragmented sleep pattern in which people sleep at all times of the day and night for shorter periods.
(Some societies; display; a fragmented sleep pattern in which people sleep at all times of the day and night for shorter periods) (people; sleep; T:at all times of the day and night for shorter periods; L:a fragmented sleep pattern)
Some societies people
display sleep
a fragmented sleep pattern in which people sleep at all times of the day and night for shorter periods
T:at all times of the day and night for shorter periods L:a fragmented sleep pattern