( ( ( The wavelengths ) ( of ( visible light ) ) ) ( ( ( ( range ( from ( ( ( about 400 ) billionths ) ( of ( ( a meter ) ( for violet ) ) ) ) ) ) , ) ( to ( ( ( about 700 ) billionths ) ( of ( ( a meter ) ( for red ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS wavelengths)) (PP (IN of) (NP (JJ visible) (NN light)))) (VP (VBP range) (PP (IN from) (NP (NP (QP (RB about) (CD 400)) (NNS billionths)) (PP (IN of) (NP (NP (DT a) (NN meter)) (PP (IN for) (NP (NN violet))))))) (, ,) (PP (TO to) (NP (NP (QP (RB about) (CD 700)) (NNS billionths)) (PP (IN of) (NP (NP (DT a) (NN meter)) (PP (IN for) (NP (NN red)))))))) (. .)))
The wavelengths of visible light range from about 400 billionths of a meter for violet, to about 700 billionths of a meter for red.
(ROOT (S (NP (NN Violet) (CC and) (NN red)) (VP (VBP are) (NP (NP (CD two) (NNS types)) (PP (IN of) (NP (JJ visible) (NN light))))) (. .)))