( ( ( The sarcomeres ) ( of ( smooth muscle ) ) ) ( ( are ( constructed ( into myofibrils ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS sarcomeres)) (PP (IN of) (NP (JJ smooth) (NN muscle)))) (VP (VBP are) (VP (VBN constructed) (PP (IN into) (NP (NNS myofibrils))))) (. .)))
The sarcomeres of smooth muscle are constructed into myofibrils.
(ROOT (S (NP (DT A) (NN sarcomere)) (VP (VBZ is) (NP (NP (DT the) (JJS smallest) (NN contractile) (NN portion)) (PP (IN of) (NP (DT a) (NN muscle))))) (. .)))