( ( SWALLOW ( ( The ( classical description ) ) ( of swallowing ) ) ) ( ( ( divides it ) ( into ( three stages ) ) ) . ) )
(ROOT (S (S (VP (VB SWALLOW) (NP (NP (DT The) (JJ classical) (NN description)) (PP (IN of) (S (VP (VBG swallowing))))))) (VP (VBZ divides) (NP (PRP it)) (PP (IN into) (NP (CD three) (NNS stages)))) (. .)))
SWALLOW The classical description of swallowing divides it into three stages.
(ROOT (S (NP (NNP Adulthood)) (VP (VBZ is) (VP (VBN divided) (PP (IN into) (NP (CD three) (NNS stages))))) (. .)))