She got gangrene in her foot and he said if you don't quit smoking you're going to lose your foot.
( ( ( ( She ( ( got gangrene ) ( in ( her foot ) ) ) ) and ) ( he ( said ( if ( you ( ( do n't ) ( quit ( smoking ( you ( 're ( going ( to ( lose ( your foot ) ) ) ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (PRP She)) (VP (VBD got) (NP (NN gangrene)) (PP (IN in) (NP (PRP$ her) (NN foot))))) (CC and) (S (NP (PRP he)) (VP (VBD said) (SBAR (IN if) (S (NP (PRP you)) (VP (VBP do) (RB n't) (VP (VB quit) (NP (NP (NN smoking)) (SBAR (S (NP (PRP you)) (VP (VBP 're) (VP (VBG going) (S (VP (TO to) (VP (VB lose) (NP (PRP$ your) (NN foot)))))))))))))))) (. .)))
Gangrene was caused by smoking.
( Gangrene ( ( was ( caused ( by smoking ) ) ) . ) )
(ROOT (S (NP (NNP Gangrene)) (VP (VBD was) (VP (VBN caused) (PP (IN by) (NP (NN smoking))))) (. .)))