( ( ( ( ( ( Her eyes ) ( were ( wide open ) ) ) , ) and ) ( ( their pupils ) distended ) ) . )
(ROOT (S (S (NP (PRP$ Her) (NNS eyes)) (VP (VBD were) (ADJP (RB wide) (JJ open)))) (, ,) (CC and) (S (NP (PRP$ their) (NNS pupils)) (VP (VBD distended))) (. .)))
Her eyes were wide open, and their pupils distended.
(ROOT (S (NP (DT The) (NN pupil)) (VP (VBZ is) (NP (NP (DT the) (NN opening)) (PP (IN in) (NP (NP (DT the) (NN front)) (PP (IN of) (NP (DT the) (NN eye))))))) (. .)))