( ( The ( Nile crocodile ) ) ( ( ( ( is ( one ( of ( ( the ( ( most dangerous ) species ) ) ( of crocodile ) ) ) ) ) and ) ( ( is ( responsible ( for ( hundreds ( of ( deaths ( of humans ) ) ) ) ) ) ) ( every year ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Nile) (NN crocodile)) (VP (VP (VBZ is) (NP (NP (CD one)) (PP (IN of) (NP (NP (DT the) (ADJP (RBS most) (JJ dangerous)) (NN species)) (PP (IN of) (NP (NN crocodile))))))) (CC and) (VP (VBZ is) (ADJP (JJ responsible) (PP (IN for) (NP (NP (NNS hundreds)) (PP (IN of) (NP (NP (NNS deaths)) (PP (IN of) (NP (NNS humans)))))))) (NP (DT every) (NN year)))) (. .)))
The Nile crocodile is one of the most dangerous species of crocodile and is responsible for hundreds of deaths of humans every year.
(ROOT (S (NP (NNP Human) (NNS actions)) (VP (VBZ is) (ADJP (JJ responsible) (PP (IN for) (NP (NP (DT the) (NN extinction)) (PP (IN of) (NP (NP (NNS hundreds)) (PP (IN of) (NP (NP (NNS species)) (PP (IN of) (NP (NNS birds))))))))))) (. .)))