( Termites ( ( are ( able ( to ( ( digest ( ( wood cellulose ) ( because ( of ( flagellate protozoans ) ) ) ) ) ( in ( ( their gut ) ( which ( ( in turn ) ( contain ( cellulase-producing bacteria ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Termites)) (VP (VBP are) (ADJP (JJ able) (S (VP (TO to) (VP (VB digest) (NP (NP (NN wood) (NN cellulose)) (PP (RB because) (IN of) (NP (JJ flagellate) (NNS protozoans)))) (PP (IN in) (NP (NP (PRP$ their) (NN gut)) (SBAR (WHNP (WDT which)) (S (PP (IN in) (NP (NN turn))) (VP (VBP contain) (NP (JJ cellulase-producing) (NNS bacteria)))))))))))) (. .)))
Termites are able to digest wood cellulose because of flagellate protozoans in their gut which in turn contain cellulase-producing bacteria.
(ROOT (S (NP (JJ Certain) (JJ anaerobic) (JJ parabasalid) (NNS species)) (VP (VBP exist) (PP (IN in) (NP (NP (DT the) (JJ digestive) (NNS tracts)) (PP (IN of) (NP (NP (NNS termites)) (CC and) (NP (JJ wood-eating) (NNS cockroaches)))))) (, ,) (SBAR (WHADVP (WRB where)) (S (NP (PRP they)) (VP (VBP contribute) (NP (NP (DT an) (JJ essential) (NN step)) (PP (IN in) (NP (NP (DT the) (NN digestion)) (PP (IN of) (NP (NN cellulose)))))))))) (. .)))