( This ( ( ( is ( ( why long ) ( ( wavelength light ) ( is ( called ( a ( radio wave ) ) ) ) ) ) ) . ) -RRB- ) )
(ROOT (S (NP (DT This)) (VP (VBZ is) (SBAR (WHADVP (WRB why) (RB long)) (S (NP (NN wavelength) (NN light)) (VP (VBZ is) (VP (VBN called) (NP (DT a) (NN radio) (NN wave))))))) (. .) (-RRB- -RRB-)))
This is why long wavelength light is called a radio wave.)
(ROOT (S (NP (NP (NNP Light)) (PP (IN with) (NP (DT the) (JJS longest) (NNS wavelengths)))) (VP (VBZ is) (VP (VBN called) (NP (JJ infrared) (NN light)))) (. .)))