( ( Light ( that ( is ( scattered ( in ( ( transparent solids ) ( due ( to ( vibrations ( -LRB- ( phonons -RRB- ) ) ) ) ) ) ) ) ) ) ) ( ( is ( called ( Brillouin scattering ) ) ) . ) )
(ROOT (S (NP (NP (NNP Light)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (VP (VBN scattered) (PP (IN in) (NP (NP (ADJP (JJ transparent)) (NNS solids)) (ADJP (JJ due) (PP (TO to) (NP (NP (NNS vibrations)) (PRN (-LRB- -LRB-) (NP (NNS phonons)) (-RRB- -RRB-)))))))))))) (VP (VBZ is) (VP (VBN called) (NP (JJ Brillouin) (NN scattering)))) (. .)))
Light that is scattered in transparent solids due to vibrations (phonons) is called Brillouin scattering.
(ROOT (S (NP (JJ Transparent) (NN matter)) (VP (VBZ transmits) (ADJP (JJ light) (PP (IN without) (S (VP (VBG scattering) (NP (PRP it))))))) (. .)))