I suspect that that is precisely the song's origin.
( I ( ( suspect ( that ( that ( ( is precisely ) ( ( the ( song 's ) ) origin ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP suspect) (SBAR (IN that) (S (NP (DT that)) (VP (VBZ is) (ADVP (RB precisely)) (NP (NP (DT the) (NN song) (POS 's)) (NN origin)))))) (. .)))
I don't think that's where the song came from.
( I ( ( ( do n't ) ( think ( that ( 's ( where ( ( the song ) ( came from ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP do) (RB n't) (VP (VB think) (SBAR (IN that) (S (VP (VBZ 's) (SBAR (WHADVP (WRB where)) (S (NP (DT the) (NN song)) (VP (VBD came) (PP (IN from)))))))))) (. .)))