( ( ( Dinosaurs and ) ( Reptiles Reptile ) ) ( ( is ( ( a term ) ( that ( refers ( to ( ( tetrapods ( -LRB- ( ( four-legged vertebrate ) -RRB- ) ) ) ( that ( ( ( ( ( ( lay ( an ( amniotic egg ) ) ) , ) ( have ( ( limb skeletons ) ( modified ( for ( fully ( terrestrial locomotion ) ) ) ) ) ) ) , ) and ) ( are ( ancestral ( to ( ( birds and ) mammals ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Dinosaurs)) (CC and) (NP (NNP Reptiles) (NNP Reptile))) (VP (VBZ is) (NP (NP (DT a) (NN term)) (SBAR (WHNP (WDT that)) (S (VP (VBZ refers) (PP (TO to) (NP (NP (NNS tetrapods)) (PRN (-LRB- -LRB-) (NP (JJ four-legged) (NN vertebrate)) (-RRB- -RRB-)) (SBAR (WHNP (WDT that)) (S (VP (VP (VBD lay) (NP (DT an) (JJ amniotic) (NN egg))) (, ,) (VP (VBP have) (NP (NP (NN limb) (NNS skeletons)) (VP (VBN modified) (PP (IN for) (NP (RB fully) (JJ terrestrial) (NN locomotion)))))) (, ,) (CC and) (VP (VBP are) (ADJP (JJ ancestral) (PP (TO to) (NP (NNS birds) (CC and) (NNS mammals))))))))))))))) (. .)))
Dinosaurs and Reptiles Reptile is a term that refers to tetrapods (four-legged vertebrate) that lay an amniotic egg , have limb skeletons modified for fully terrestrial locomotion , and are ancestral to birds and mammals.
(ROOT (S (NP (JJS Most) (NNS reptiles)) (VP (VBD lay) (NP (JJ amniotic) (NNS eggs))) (. .)))