( ( Speed ( of light ) ) ( ( is ( computed ( by ( ( the product ) ( of ( the ( wavelength ( and ( wave speed ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NN Speed)) (PP (IN of) (NP (NN light)))) (VP (VBZ is) (VP (VBN computed) (PP (IN by) (NP (NP (DT the) (NN product)) (PP (IN of) (NP (DT the) (NN wavelength) (CC and) (NN wave) (NN speed))))))) (. .)))
Speed of light is computed by the product of the wavelength and wave speed.
(ROOT (S (NP (NP (DT The) (NN product)) (PP (IN of) (NP (NP (NP (DT a) (NN wave) (POS 's)) (NN wavelength)) (CC and) (NP (PRP$ its) (NN frequency))))) (VP (VBZ is) (NP (PRP$ its) (NN speed))) (. .)))