( ( The color ) ( ( will ( fade ( ( ( approximately ( ( 30 to ) 40 ) ) percent ) ( over ( a ( four ( week period ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN color)) (VP (MD will) (VP (VB fade) (NP (NP (QP (RB approximately) (CD 30) (TO to) (CD 40)) (NN percent)) (PP (IN over) (NP (DT a) (CD four) (NN week) (NN period)))))) (. .)))
The color will fade approximately 30 to 40 percent over a four week period.
(ROOT (S (NP (DT The) (JJ fetal) (NN period)) (VP (VBZ lasts) (NP (NP (QP (RB approximately) (CD 30)) (NNS weeks)) (NP (NNS weeks)))) (. .)))