Eighty percent of pagers in the United States were knocked out by a satellite malfunction in space.
( ( ( Eighty percent ) ( of ( pagers ( in ( the ( United States ) ) ) ) ) ) ( ( were ( ( knocked out ) ( by ( ( a ( satellite malfunction ) ) ( in space ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Eighty) (NN percent)) (PP (IN of) (NP (NP (NNS pagers)) (PP (IN in) (NP (DT the) (NNP United) (NNPS States)))))) (VP (VBD were) (VP (VBN knocked) (PRT (RP out)) (PP (IN by) (NP (NP (DT a) (NN satellite) (NN malfunction)) (PP (IN in) (NP (NN space))))))) (. .)))
The pagers were only knocked out for a brief period of time.
( ( The pagers ) ( ( ( were only ) ( ( knocked out ) ( for ( ( a ( brief period ) ) ( of time ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS pagers)) (VP (VBD were) (ADVP (RB only)) (VP (VBN knocked) (PRT (RP out)) (PP (IN for) (NP (NP (DT a) (JJ brief) (NN period)) (PP (IN of) (NP (NN time))))))) (. .)))