( ( ( Animals : ) ( Squirrels ( ( are still ) ( ( preparing ( for ( the winter ) ) ) ( by ( gathering nuts ) ) ) ) ) ) . )
(ROOT (NP (NP (NNS Animals)) (: :) (S (NP (NNP Squirrels)) (VP (VBP are) (ADVP (RB still)) (VP (VBG preparing) (PP (IN for) (NP (DT the) (NN winter))) (PP (IN by) (NP (NN gathering) (NNS nuts)))))) (. .)))
Animals: Squirrels are still preparing for the winter by gathering nuts.
(ROOT (S (NP (NP (DT A) (NN squirrel)) (VP (VBG storing) (NP (NNS nuts)))) (VP (VBZ is) (VP (VBG preparing) (PP (IN for) (NP (NP (DT a) (JJ seasonal) (NN change)) (PP (IN in) (NP (DT the) (NN environment))))))) (. .)))