( ( ( Pathogens ( -LRB- ( ( disease ( causing organisms ) ) -RRB- ) ) ) ( such ( as ( bacteria ( , ( ( fungi and ) protozoans ) ) ) ) ) ) ( ( ( can also ) ( be ( used ( to ( manage ( greenhouse pests ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NP (NNS Pathogens)) (PRN (-LRB- -LRB-) (NP (NN disease) (NN causing) (NNS organisms)) (-RRB- -RRB-))) (PP (JJ such) (IN as) (NP (NNS bacteria) (, ,) (NNS fungi) (CC and) (NNS protozoans)))) (VP (MD can) (ADVP (RB also)) (VP (VB be) (VP (VBN used) (S (VP (TO to) (VP (VB manage) (NP (NN greenhouse) (NNS pests)))))))) (. .)))
Pathogens (disease causing organisms) such as bacteria, fungi and protozoans can also be used to manage greenhouse pests.
(ROOT (S (NP (NNS Trichomoniasis)) (VP (VBZ is) (VP (VB cause) (PP (IN by) (NP (DT a) (NN protozoa))))) (. .)))