He had no real answer.
( He ( ( had ( no ( real answer ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD had) (NP (DT no) (JJ real) (NN answer))) (. .)))
He didn't have an answer.
( He ( ( ( did n't ) ( have ( an answer ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD did) (RB n't) (VP (VB have) (NP (DT an) (NN answer)))) (. .)))