( ( Small ( cell ( lung cancer ) ) ) ( also ( ( called ( ( oat ( cell cancer ) ) ( is ( ( ( the ( ( less common ) ( lung ( cancer type ) ) ) ) , ) ( accounting ( for ( ( ( about 20 ) % ) ( of ( all ( lung cancer ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (JJ Small) (NN cell) (NN lung) (NN cancer)) (ADVP (RB also)) (VP (VBD called) (SBAR (S (NP (NN oat) (NN cell) (NN cancer)) (VP (VBZ is) (NP (NP (DT the) (ADJP (RBR less) (JJ common)) (NN lung) (NN cancer) (NN type)) (, ,) (VP (VBG accounting) (PP (IN for) (NP (NP (QP (RB about) (CD 20)) (NN %)) (PP (IN of) (NP (DT all) (NN lung) (NN cancer))))))))))) (. .)))
Small cell lung cancer also called oat cell cancer is the less common lung cancer type, accounting for about 20% of all 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))))) (. .)))