( ( The point ) ( ( is ( to ( ( ( have ( ( the class ) ( realize ( that ( something ( is ( happening ( to ( the wood ) ) ) ) ) ) ) ) ) , ) ( ( ( ( ( new substances ) ( are ( being formed ) ) ) , ) and ) ( that ( ( the process ) ( is ( named burning ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN point)) (VP (VBZ is) (S (VP (TO to) (VP (VB have) (S (NP (DT the) (NN class)) (VP (VB realize) (SBAR (IN that) (S (NP (NN something)) (VP (VBZ is) (VP (VBG happening) (PP (TO to) (NP (DT the) (NN wood))))))))) (, ,) (SBAR (SBAR (S (NP (JJ new) (NNS substances)) (VP (VBP are) (VP (VBG being) (VP (VBN formed)))))) (, ,) (CC and) (SBAR (IN that) (S (NP (DT the) (NN process)) (VP (VBZ is) (VP (VBN named) (NP (NN burning))))))))))) (. .)))
The point is to have the class realize that something is happening to the wood, new substances are being formed, and that the process is named burning.
(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))))))) (. .)))