( Evolutionists ( ( ( tell us ) ( that ( reptiles ( evolved ( into birds ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Evolutionists)) (VP (VBP tell) (NP (PRP us)) (SBAR (IN that) (S (NP (NNS reptiles)) (VP (VBD evolved) (PP (IN into) (NP (NNS birds))))))) (. .)))
Evolutionists tell us that reptiles evolved into birds.
(ROOT (S (NP (NNP Birds)) (VP (VBD evolved) (PP (IN from) (NP (JJ reptile) (NNS ancestors)))) (. .)))