( Capillary ( ( ( The smallest ) ( of ( the body ) ) ) ( ( 's ( blood vessels ) ) . ) ) )
(ROOT (S (ADVP (RB Capillary)) (NP (NP (DT The) (JJS smallest)) (PP (IN of) (NP (DT the) (NN body)))) (VP (VBZ 's) (NP (NN blood) (NNS vessels))) (. .)))
Capillary The smallest of the body's blood vessels.
(ROOT (S (NP (NNS Capillaries)) (VP (VBP are) (NP (NP (DT the) (JJS smallest) (NN type)) (PP (IN of) (NP (NN blood) (NNS vessels))))) (. .)))