( Cells ( ( ( produce energy ) ( through ( ( a process ) ( ( called `` ) ( cellular respiration ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Cells)) (VP (VBP produce) (NP (NN energy)) (PP (IN through) (NP (NP (DT a) (NN process)) (VP (VBN called) (`` ``) (NP (JJ cellular) (NN respiration)))))) (. .)))
Cells produce energy through a process called &quot;cellular respiration.
(ROOT (S (PP (IN As) (NP (NP (DT a) (NN result)) (PP (IN of) (NP (JJ cellular) (NN respiration))))) (, ,) (NP (NP (NN energy)) (PP (IN for) (NP (NN cell) (NNS processes)))) (VP (VBZ is) (VP (VBN released))) (. .)))