( ( The space ) ( ( ( was not ) ( transparent ( to ( light ( because ( of ( ( the ionisation ) ( of matter ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN space)) (VP (VBD was) (RB not) (ADJP (JJ transparent) (S (VP (TO to) (VP (VB light) (PP (RB because) (IN of) (NP (NP (DT the) (NN ionisation)) (PP (IN of) (NP (NN matter)))))))))) (. .)))
The space was not transparent to light because of the ionisation of matter.
(ROOT (S (NP (JJ Transparent) (NN matter)) (VP (VBZ transmits) (ADJP (JJ light) (PP (IN without) (S (VP (VBG scattering) (NP (PRP it))))))) (. .)))