( Chemotherapy ( ( is ( ( the ( ( most common ) treatment ) ) ( of ( ( all stages ) ( of ( small ( cell ( lung cancer ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Chemotherapy)) (VP (VBZ is) (NP (NP (DT the) (ADJP (RBS most) (JJ common)) (NN treatment)) (PP (IN of) (NP (NP (DT all) (NNS stages)) (PP (IN of) (NP (JJ small) (NN cell) (NN lung) (NN cancer))))))) (. .)))
Chemotherapy is the most common treatment of all stages of small cell lung cancer.
(ROOT (S (NP (DT All) (NNS cells)) (VP (VBP have) (NP (NP (DT the) (JJ small) (NN size)) (PP (IN in) (NP (JJ common))))) (. .)))