Sit down, will you?" Tuppence sat down on the chair facing him.
( Sit ( ( down ( , ( ( ( will you ) ? ) '' ) ) ) ( Tuppence ( ( ( sat down ) ( on ( ( the chair ) ( facing him ) ) ) ) . ) ) ) )
(ROOT (S (NP (NNP Sit)) (PRN (SINV (ADVP (RB down)) (, ,) (VP (MD will)) (NP (PRP you)) (. ?) ('' ''))) (NP (NNP Tuppence)) (VP (VBD sat) (PRT (RP down)) (PP (IN on) (NP (NP (DT the) (NN chair)) (VP (VBG facing) (NP (PRP him)))))) (. .)))
He asked Tuppence to sit on a red chair. 
( He ( ( asked ( Tuppence ( to ( sit ( on ( a ( red chair ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD asked) (S (NP (NNP Tuppence)) (VP (TO to) (VP (VB sit) (PP (IN on) (NP (DT a) (JJ red) (NN chair))))))) (. .)))