( ( explain disease ) ( as ( ( a failure ) ( of homeostasis ) ) ) )
(ROOT (S (VP (VB explain) (NP (NN disease)) (PP (IN as) (NP (NP (DT a) (NN failure)) (PP (IN of) (NP (NNS homeostasis))))))))
explain disease as a failure of homeostasis
(ROOT (S (SBAR (IN If) (S (NP (NP (DT an) (NN organism) (POS 's)) (NNS homeostasis)) (VP (VBZ is) (RB not) (VP (VBN maintained))))) (, ,) (NP (DT the) (NN effect)) (VP (MD will) (VP (VB be) (NP (NN death) (CC or) (NN disease)))) (. .)))