It's hard to explain exactly how camp can change a child's heart.
( It ( ( 's ( hard ( to ( explain ( ( exactly how ) ( camp ( can ( change ( ( a ( child 's ) ) heart ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ 's) (ADJP (JJ hard) (S (VP (TO to) (VP (VB explain) (SBAR (WHADVP (RB exactly) (WRB how)) (S (NP (NN camp)) (VP (MD can) (VP (VB change) (NP (NP (DT a) (NN child) (POS 's)) (NN heart))))))))))) (. .)))
It's hard to fully explain how camp can have a significant effect on a child.
( It ( ( 's ( hard ( to ( fully ( explain ( how ( camp ( can ( have ( ( a ( significant effect ) ) ( on ( a child ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ 's) (ADJP (JJ hard) (S (VP (TO to) (VP (ADVP (RB fully)) (VB explain) (SBAR (WHADVP (WRB how)) (S (NP (NN camp)) (VP (MD can) (VP (VB have) (NP (NP (DT a) (JJ significant) (NN effect)) (PP (IN on) (NP (DT a) (NN child))))))))))))) (. .)))