( Chemotherapy ( ( ( ( is ( ( the ( ( most common ) treatment ) ) ( for ( ( all stages ) ( of ( small ( cell ( lung cancer ) ) ) ) ) ) ) ) and ) ( ( is also ) ( used ( for ( non-small ( cell ( lung cancer ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Chemotherapy)) (VP (VP (VBZ is) (NP (NP (DT the) (ADJP (RBS most) (JJ common)) (NN treatment)) (PP (IN for) (NP (NP (DT all) (NNS stages)) (PP (IN of) (NP (JJ small) (NN cell) (NN lung) (NN cancer))))))) (CC and) (VP (VBZ is) (ADVP (RB also)) (VP (VBN used) (PP (IN for) (NP (JJ non-small) (NN cell) (NN lung) (NN cancer)))))) (. .)))
Chemotherapy is the most common treatment for all stages of small cell lung cancer and is also used for non-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))))) (. .)))