( ( ( Some species ) ( of starfish ) ) ( ( ( brood ( their eggs ) ) ( after ( they ( 're fertilized ) ) ) ) . ) )
(ROOT (S (NP (NP (DT Some) (NN species)) (PP (IN of) (NP (NN starfish)))) (VP (VBD brood) (NP (PRP$ their) (NNS eggs)) (SBAR (IN after) (S (NP (PRP they)) (VP (VBP 're) (VP (VBN fertilized)))))) (. .)))
Some species of starfish brood their eggs after they're fertilized.
(ROOT (S (S (NP (NP (DT Some) (NN species)) (PP (IN of) (NP (NN fish)))) (VP (VBP carry) (NP (PRP$ their) (VBN fertilized) (NNS eggs)) (PP (IN in) (NP (PRP$ their) (NN mouth))) (SBAR (IN until) (S (NP (PRP they)) (VP (VBP hatch)))))) (: ;) (S (NP (DT this)) (VP (VBZ is) (VP (VBN called) (S (ADJP (NN mouth) (JJ brooding)))))) (. .)))