( ( In ( ( the production ) ( of ( chemical pulp ) ) ) ) ( , ( there ( ( is ( ( a loss ) ( of ( ( ( approximately 50 ) percent ) ( of ( ( wood substances ) ( in ( ( the form ) ( of ( ( ( ( ( lignin , ) hemicelluloses ) , ) and ) ( degraded cellulose ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NP (DT the) (NN production)) (PP (IN of) (NP (NN chemical) (NN pulp))))) (, ,) (NP (EX there)) (VP (VBZ is) (NP (NP (DT a) (NN loss)) (PP (IN of) (NP (NP (QP (RB approximately) (CD 50)) (NN percent)) (PP (IN of) (NP (NP (NN wood) (NNS substances)) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NP (NN lignin)) (, ,) (NP (NNS hemicelluloses)) (, ,) (CC and) (NP (JJ degraded) (NN cellulose)))))))))))) (. .)))
In the production of chemical pulp, there is a loss of approximately 50 percent of wood substances in the form of lignin, hemicelluloses, and degraded cellulose.
(ROOT (S (NP (NP (DT The) (NN action)) (PP (IN of) (S (VP (VBG burning) (NP (NP (DT a) (NN piece)) (PP (IN of) (NP (NN wood)))))))) (VP (VBZ forms) (NP (DT a) (JJ different) (NN chemical) (NN substance))) (. .)))