( ( Acinetobacter baumannii ) ( ( is ( ( a species ) ( of ( ( ( pathogenic bacteria ) , ) ( referred ( to ( ( ( as ( an ( aerobic ( gram-negative bacterium ) ) ) ) , ) ( which ( is ( resistant ( to ( most antibiotics ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Acinetobacter) (NNS baumannii)) (VP (VBZ is) (NP (NP (DT a) (NN species)) (PP (IN of) (NP (NP (JJ pathogenic) (NNS bacteria)) (, ,) (VP (VBN referred) (PP (TO to) (NP (NP (RB as) (DT an) (JJ aerobic) (JJ gram-negative) (NN bacterium)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (ADJP (JJ resistant) (PP (TO to) (NP (JJS most) (NNS antibiotics)))))))))))))) (. .)))
Acinetobacter baumannii is a species of pathogenic bacteria, referred to as an aerobic gram-negative bacterium, which is resistant to most antibiotics.
(ROOT (S (NP (NNS Bacteria)) (VP (VBP are) (NP (NP (DT the) (RBS most) (JJ numerous) (NNS species)) (PP (IN on) (NP (DT the) (NN planet))))) (. .)))