( ( ( waterborne pathogens ) ( A pathogen ) ) ( ( is ( ( a ( bacterium ( , ( ( virus or ) parasite ) ) ) ) ( that ( ( causes or ) ( is ( capable ( of ( causing disease ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ waterborne) (NNS pathogens)) (NP (DT A) (NN pathogen))) (VP (VBZ is) (NP (NP (DT a) (NN bacterium) (, ,) (NN virus) (CC or) (NN parasite)) (SBAR (WHNP (WDT that)) (S (VP (VP (VBZ causes)) (CC or) (VP (VBZ is) (ADJP (JJ capable) (PP (IN of) (S (VP (VBG causing) (NP (NN disease)))))))))))) (. .)))
waterborne pathogens A pathogen is a bacterium, virus or parasite that causes or is capable of causing disease.
(ROOT (S (NP (NNS Pathogens)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (JJ disease-causing) (NNS agents))) (, ,) (PP (JJ such) (IN as) (NP (NNS bacteria) (CC and) (NNS viruses))))) (. .)))