They greeted her and she smiled shyly back.
( They ( ( greeted ( ( ( her and ) she ) ( ( smiled shyly ) back ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBD greeted) (SBAR (S (NP (PRP her) (CC and) (PRP she)) (VP (VBD smiled) (ADVP (RB shyly)) (ADVP (RB back)))))) (. .)))
They didn't say anything to the girl.
( They ( ( ( did n't ) ( ( say anything ) ( to ( the girl ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBD did) (RB n't) (VP (VB say) (NP (NN anything)) (PP (TO to) (NP (DT the) (NN girl))))) (. .)))