( ( ( Hearts , ) ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( lungs , ) eyes ) , ) blood ) , ) bones ) , ) muscles ) , ) veins ) , ) kidneys ) , ) livers ) , ) skin ) , ) intestines ) , ) gonads ) , ) and ) ( the ( immune system ) ) ) ) ( all ( ( perform ( specific functions ) ) . ) ) )
(ROOT (S (NP (NP (NNP Hearts)) (, ,) (NP (NP (NNS lungs)) (, ,) (NP (NNS eyes)) (, ,) (NP (NN blood)) (, ,) (NP (NNS bones)) (, ,) (NP (NNS muscles)) (, ,) (NP (NNS veins)) (, ,) (NP (NNS kidneys)) (, ,) (NP (NNS livers)) (, ,) (NP (NN skin)) (, ,) (NP (NNS intestines)) (, ,) (NP (NNS gonads)) (, ,) (CC and) (NP (DT the) (JJ immune) (NN system)))) (RB all) (VP (VB perform) (NP (JJ specific) (NNS functions))) (. .)))
Hearts, lungs, eyes, blood, bones, muscles, veins, kidneys, livers, skin, intestines, gonads, and the immune system all perform specific functions.
(ROOT (S (NP (NP (NNS Kidneys)) (, ,) (NP (JJ large) (NN intestine)) (, ,) (NP (NN liver)) (, ,) (NP (NN skin)) (, ,) (CC and) (NP (NNS lungs))) (VP (VBP comprise) (NP (DT the) (JJ excretory) (NN system))) (. .)))