( ( Parasitism Parasitism ) ( ( is ( ( a ( symbiotic relationship ) ) ( ( in ( ( which one ) species ) ) ( -LRB- ( ( the parasite ) ( -RRB- ( benefits ( while ( ( ( the ( other species ) ) ( -LRB- ( ( the host ) -RRB- ) ) ) ( is harmed ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Parasitism) (NNP Parasitism)) (VP (VBZ is) (NP (NP (DT a) (JJ symbiotic) (NN relationship)) (SBAR (WHPP (IN in) (WHNP (WDT which) (CD one) (NNS species))) (S (-LRB- -LRB-) (NP (DT the) (NN parasite)) (-RRB- -RRB-) (VP (VBZ benefits) (SBAR (IN while) (S (NP (NP (DT the) (JJ other) (NN species)) (PRN (-LRB- -LRB-) (NP (DT the) (NN host)) (-RRB- -RRB-))) (VP (VBZ is) (ADJP (VBN harmed)))))))))) (. .)))
Parasitism   Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species  (the host) is harmed.
(ROOT (S (S (NP (NNP Parasitism)) (VP (VBP isl) (NP (NP (DT a) (NN relationship)) (SBAR (WHADVP (WRB where)) (S (NP (DT the) (NNS bacteria)) (VP (VBP benefit))))))) (CC and) (S (CC and) (NP (DT the) (JJ other) (NN organism)) (VP (VBZ is) (ADJP (VBN harmed)))) (. .)))