( ( For example ) ( , ( wood ( ( can ( be ( burned ( to ( produce fire ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN For) (NP (NN example))) (, ,) (NP (NN wood)) (VP (MD can) (VP (VB be) (VP (VBN burned) (S (VP (TO to) (VP (VB produce) (NP (NN fire)))))))) (. .)))
For example, wood can be burned to produce fire.
(ROOT (S (NP (NNP Wood) (NNP burning)) (VP (VBZ is) (NP (NP (DT an) (NN example)) (PP (IN of) (NP (NP (DT a) (JJ different) (NN substance)) (VP (VBG being) (VP (VBN formed))))))) (. .)))