( ( ( The muscle ) ( for ( the day ) ) ) ( ( is ( the ( cardiac muscle ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN muscle)) (PP (IN for) (NP (DT the) (NN day)))) (VP (VBZ is) (NP (DT the) (JJ cardiac) (NN muscle))) (. .)))
The muscle for the day is the cardiac muscle .
(ROOT (S (NP (NNP Cardiac) (NN muscle)) (VP (VBZ makes) (PRT (RP up)) (NP (NP (JJS most)) (PP (IN of) (NP (DT the) (NN heart))))) (. .)))