He seemed a trifle embarrassed.
( He ( ( seemed ( ( a trifle ) embarrassed ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD seemed) (ADJP (NP (DT a) (RB trifle)) (JJ embarrassed))) (. .)))
He wasn't embarrassed at all.
( He ( ( ( was n't ) ( embarrassed ( at all ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD was) (RB n't) (VP (VBN embarrassed) (ADVP (IN at) (DT all)))) (. .)))