( Humans ( ( ( ( ( ( ( are ( born ( ( helpless and ) altricial ) ) ) , ) ( mature slowly ) ) , ) and ) ( ( depend ( on ( parental investment ) ) ) ( ( ( ( well ( into ( their ( young ( adult lives ) ) ) ) ) , ) and ) ( often ( even later ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Humans)) (VP (VP (VBP are) (VP (VBN born) (S (ADJP (JJ helpless) (CC and) (JJ altricial))))) (, ,) (VP (VBP mature) (ADVP (RB slowly))) (, ,) (CC and) (VP (VBP depend) (PP (IN on) (NP (JJ parental) (NN investment))) (ADVP (ADVP (RB well) (PP (IN into) (NP (PRP$ their) (JJ young) (NN adult) (NNS lives)))) (, ,) (CC and) (ADVP (RB often) (RB even) (RB later))))) (. .)))
Humans are born helpless and altricial, mature slowly, and depend on parental investment well into their young adult lives, and often even later.
(ROOT (S (NP (JJ Altricial) (NNS organisms)) (VP (VP (VBP are) (ADJP (JJ helpless) (PP (IN at) (NP (NN birth))))) (CC and) (VP (VBP require) (NP (NP (NNS lots)) (PP (IN of) (NP (NN help)))) (PP (IN from) (NP (PRP$ their) (NNS parents))))) (. .)))