( ( A ( good example ) ) ( ( ( is ( the claim ) ) ( that ( ( natural selection ) ( ( will not ) ( produce ( new organs ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (JJ good) (NN example)) (VP (VBZ is) (NP (DT the) (NN claim)) (SBAR (IN that) (S (NP (JJ natural) (NN selection)) (VP (MD will) (RB not) (VP (VB produce) (NP (JJ new) (NNS organs))))))) (. .)))
A good example is the claim that natural selection will not produce new organs.
(ROOT (S (NP (JJ Natural) (NN selection)) (VP (VBZ is) (NP (NP (DT the) (NN process)) (SBAR (WHNP (WDT that)) (S (VP (VBZ allows) (NP (NNS organisms)) (PP (IN with) (NP (JJR better) (NNS traits) (S (VP (TO to) (VP (VB survive) (CC and) (VB produce))))))))))) (. .)))