Just because, you know, she knows how I am, I guess.
( ( Just ( because ( , ( ( you know ) ( , ( she ( knows ( how ( I am ) ) ) ) ) ) ) ) ) ( , ( I ( guess . ) ) ) )
(ROOT (S (SBAR (RB Just) (IN because) (S (, ,) (S (NP (PRP you)) (VP (VBP know))) (, ,) (NP (PRP she)) (VP (VBZ knows) (SBAR (WHADVP (WRB how)) (S (NP (PRP I)) (VP (VBP am))))))) (, ,) (NP (PRP I)) (VP (VBP guess)) (. .)))
The reason why is because she knows me.
( ( The ( reason why ) ) ( ( is ( because ( she ( knows me ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN reason) (NN why)) (VP (VBZ is) (SBAR (IN because) (S (NP (PRP she)) (VP (VBZ knows) (NP (PRP me)))))) (. .)))