( ( ( Capillary -- ) ( ( Smallest ( blood vessels ) ) ( in ( the body ) ) ) ) . )
(ROOT (NP (NP (NNP Capillary)) (: --) (NP (NP (NNP Smallest) (NN blood) (NNS vessels)) (PP (IN in) (NP (DT the) (NN body)))) (. .)))
Capillary -- Smallest blood vessels in the body.
(ROOT (S (NP (NNS Capillaries)) (VP (VBP are) (NP (NP (DT the) (JJS smallest) (NN type)) (PP (IN of) (NP (NN blood) (NNS vessels))))) (. .)))