All pet birds need 12 hours of sleep each night to maintain their good health.
(All pet birds; need; 12 hours of sleep each night; to maintain their good health) Context(All pet birds need,List([0, 18))):(All pet birds; need 12 hours of sleep each night to maintain; their good health)
All pet birds need,List([0, 18))
All pet birds All pet birds
need need 12 hours of sleep each night to maintain
12 hours of sleep each night to maintain their good health
their good health