( ( ( ( ( ( Virtually ( all ( human illness ) ) ) ( is ( caused ( by ( ( ( one species ) , ) ( Campylobacter jejuni ) ) ) ) ) ) , ) but ) ( ( 1 % ) ( are ( caused ( by ( other species ) ) ) ) ) ) . )
(ROOT (S (S (NP (RB Virtually) (DT all) (JJ human) (NN illness)) (VP (VBZ is) (VP (VBN caused) (PP (IN by) (NP (NP (CD one) (NNS species)) (, ,) (NP (NNP Campylobacter) (NNP jejuni))))))) (, ,) (CC but) (S (NP (CD 1) (NN %)) (VP (VBP are) (VP (VBN caused) (PP (IN by) (NP (JJ other) (NNS species)))))) (. .)))
Virtually all human illness is caused by one species, Campylobacter jejuni , but 1% are caused by other species.
(ROOT (S (NP (NNP Human) (NNP overpopulation)) (VP (VBZ is) (VP (VP (VBG crowding) (PRT (RP out)) (NP (JJ other) (NNS species))) (CC and) (VP (VBG making) (S (NP (NP (PDT all) (DT the) (JJ other) (NNS causes)) (PP (IN of) (NP (NN extinction)))) (ADJP (RBR worse)))))) (. .)))