One letter writer to The Times [21 June 1988] 
( ( ( ( One ( letter writer ) ) ( to ( The ( Times ( -LSB- 21 ) ) ) ) ) ( June 1988 ) ) -RSB- )
(ROOT (S (NP (NP (CD One) (NN letter) (NN writer)) (PP (TO to) (NP (DT The) (NNP Times) (NNP -LSB-) (CD 21))) (NP (NNP June) (CD 1988))) (ADJP (JJ -RSB-))))
A letter written in 1999.
( ( A letter ) ( ( written ( in 1999 ) ) . ) )
(ROOT (S (NP (DT A) (NN letter)) (VP (VBN written) (PP (IN in) (NP (CD 1999)))) (. .)))