( ( ( A ( small protozoan ) ) ( named ( ( Trichonympha ( companula lives ) ) ( in ( the termite ) ) ) ) ) ( ( ( ( s ( digestive system ) ) and ) ( does ( ( the job ) ( of ( ( breaking down ) ( ( the cellulose ) ( ( the termite ) eats ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (JJ small) (NN protozoan)) (VP (VBN named) (NP (NP (NNP Trichonympha) (NN companula) (NNS lives)) (PP (IN in) (NP (DT the) (NN termite)))))) (VP (VP (VBZ s) (NP (JJ digestive) (NN system))) (CC and) (VP (VBZ does) (NP (NP (DT the) (NN job)) (PP (IN of) (S (VP (VBG breaking) (PRT (RP down)) (NP (NP (DT the) (NN cellulose)) (SBAR (S (NP (DT the) (NN termite)) (VP (VBZ eats))))))))))) (. .)))
A small protozoan named Trichonympha companula lives in the termite s digestive system and does the job of breaking down the cellulose the termite eats.
(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)))))))))) (. .)))