( ( ( ( Termites ( ( feed primarily ) ( on ( ( the ( ( cellulose and ) lignin ) ) ( found ( in ( plant ( cell walls ) ) ) ) ) ) ) ) ; ) ( ( these compounds ) ( are ( ( the ( main ingredients ) ) ( of ( ( wood and ) ( all ( paper products ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNS Termites)) (VP (VBP feed) (ADVP (RB primarily)) (PP (IN on) (NP (NP (DT the) (NN cellulose) (CC and) (NN lignin)) (VP (VBN found) (PP (IN in) (NP (NN plant) (NN cell) (NNS walls)))))))) (: ;) (S (NP (DT these) (NNS compounds)) (VP (VBP are) (NP (NP (DT the) (JJ main) (NNS ingredients)) (PP (IN of) (NP (NP (NN wood)) (CC and) (NP (DT all) (NN paper) (NNS products))))))) (. .)))
Termites feed primarily on the cellulose and lignin found in plant cell walls; these compounds are the main ingredients of wood and all paper products.
(ROOT (S (NP (NNP Cellulose)) (VP (VP (VBZ is) (NP (NP (CD one)) (PP (IN of) (NP (NP (DT the) (ADJP (RBS most) (JJ common)) (JJ biochemical) (NNS compounds)) (PP (IN on) (NP (NN earth))))))) (CC and) (VP (VBZ is) (VP (VBN found) (PP (IN in) (NP (DT all) (NNS plants)))))) (. .)))