( ( ( ( Water ( will ( ( slow down ) ( ( the speed ) ( of light ) ) ) ) ) and ) ( ( the wavelength ) ( will decrease ) ) ) . )
(ROOT (S (S (NP (NNP Water)) (VP (MD will) (VP (VB slow) (PRT (RP down)) (NP (NP (DT the) (NN speed)) (PP (IN of) (NP (NN light))))))) (CC and) (S (NP (DT the) (NN wavelength)) (VP (MD will) (VP (VB decrease)))) (. .)))
Water will slow down the speed of light and the wavelength will decrease.
(ROOT (S (PP (IN As) (NP (NP (DT the) (NN temperature)) (PP (IN of) (NP (NN water) (NNS decreases))))) (, ,) (NP (DT the) (NN water) (NNS molecules)) (VP (VB slow) (PRT (RP down))) (. .)))