( ( BACKGROUND Sunlight ) ( ( is ( ( ( subdivided ( into ( visible light ) ) ) , ) ( ( ranging ( from ( ( 400 nm ) ( -LRB- ( violet -RRB- ) ) ) ) ) ( to ( ( 700 nm ) ( -LRB- ( red -RRB- ) ) ) ) ) ) ) ; ) )
(ROOT (S (NP (NNP BACKGROUND) (NNP Sunlight)) (VP (VBZ is) (VP (VBN subdivided) (PP (IN into) (NP (JJ visible) (NN light))) (, ,) (S (VP (VBG ranging) (PP (IN from) (NP (NP (QP (CD 400) (CD nm))) (PRN (-LRB- -LRB-) (NP (NN violet)) (-RRB- -RRB-)))) (PP (TO to) (NP (NP (QP (CD 700) (CD nm))) (PRN (-LRB- -LRB-) (ADJP (JJ red)) (-RRB- -RRB-)))))))) (: ;)))
BACKGROUND Sunlight is subdivided into visible light, ranging from 400 nm (violet) to 700 nm (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))))) (. .)))