In 1986, a bomb went off at a disco in Berlin, killing two American soldiers.
( ( In 1986 ) ( , ( ( a bomb ) ( ( ( ( ( ( went off ) ( at ( a disco ) ) ) ( in Berlin ) ) , ) ( killing ( two ( American soldiers ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (CD 1986))) (, ,) (NP (DT a) (NN bomb)) (VP (VBD went) (PRT (RP off)) (PP (IN at) (NP (DT a) (NN disco))) (PP (IN in) (NP (NNP Berlin))) (, ,) (S (VP (VBG killing) (NP (CD two) (JJ American) (NNS soldiers))))) (. .)))
A bomb killed two Americans in Berlin.
( ( A bomb ) ( ( ( killed ( two Americans ) ) ( in Berlin ) ) . ) )
(ROOT (S (NP (DT A) (NN bomb)) (VP (VBD killed) (NP (CD two) (NNS Americans)) (PP (IN in) (NP (NNP Berlin)))) (. .)))