One may well wonder what Miss Stowe had in mind when, in Uncle Tom's Cabin (Chapter 5), she narrates how  Mrs.
( One ( ( may well ) ( ( wonder ( what ( ( Miss Stowe ) ( had ( in mind ) ) ) ) ) ( when ( , ( ( in ( ( ( Uncle ( Tom 's ) ) Cabin ) ( -LRB- ( ( Chapter 5 ) -RRB- ) ) ) ) ( , ( she ( ( narrates how ) Mrs. ) ) ) ) ) ) ) ) )
(ROOT (S (NP (PRP One)) (VP (MD may) (ADVP (RB well)) (VP (VB wonder) (SBAR (WHNP (WP what)) (S (NP (NNP Miss) (NNP Stowe)) (VP (VBD had) (PP (IN in) (NP (NN mind)))))) (SBAR (WHADVP (WRB when)) (S (, ,) (PP (IN in) (NP (NP (NP (NNP Uncle) (NNP Tom) (POS 's)) (NNP Cabin)) (PRN (-LRB- -LRB-) (NP (NN Chapter) (CD 5)) (-RRB- -RRB-)))) (, ,) (NP (PRP she)) (VP (VBZ narrates) (ADVP (WRB how)) (NP (NNP Mrs.)))))))))
Miss Stowe is the main character of the book, which follows her struggles.
( ( Miss Stowe ) ( ( is ( ( the ( main character ) ) ( of ( ( ( the book ) , ) ( which ( follows ( her struggles ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Miss) (NNP Stowe)) (VP (VBZ is) (NP (NP (DT the) (JJ main) (NN character)) (PP (IN of) (NP (NP (DT the) (NN book)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ follows) (SBAR (S (NP (PRP her)) (VP (VBZ struggles))))))))))) (. .)))