sentence1_binary_parse: ( ( is ( burned ( to ( produce ( ( heat and ) electricity ) ) ) ) ) . )
sentence1_parse: (ROOT (S (VP (VBZ is) (VP (VBN burned) (S (VP (TO to) (VP (VB produce) (NP (NN heat) (CC and) (NN electricity))))))) (. .)))
sentence1: is burned to produce heat and electricity.
sentence2_parse: (ROOT (S (NP (NNP Heat)) (VP (VBZ is) (VP (VBN produced) (SBAR (WHADVP (WRB when)) (S (NP (NN paper)) (VP (VBZ is) (VP (VBN burned))))))) (. .)))
sentence2: Heat is produced when paper is burned.