( ( Birds ( of prey ) ) ( , ( also ( ( ( known ( as ( raptors ( , ( ( hunt and ) feed ) ) ) ) ) ( on ( other animals ) ) ) . ) ) ) )
(ROOT (S (NP (NP (NNP Birds)) (PP (IN of) (NP (NN prey)))) (, ,) (ADVP (RB also)) (VP (VBN known) (PP (IN as) (NP (NNS raptors) (, ,) (NN hunt) (CC and) (NN feed))) (PP (IN on) (NP (JJ other) (NNS animals)))) (. .)))
Birds of prey, also known as raptors, hunt and feed on other animals.
(ROOT (S (NP (DT The) (NN term) (NNS raptors)) (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB describe) (NP (NP (NP (NNS birds)) (NP (DT that) (NN hunt))) (, ,) (NP (JJ eat) (NNS mammals)) (, ,) (CC and) (NP (JJ other) (NNS birds)))))))) (. .)))