At 9:00, American Airlines Executive Vice President Gerard Arpey learned that communications had been lost with American 77.
( ( At 9:00 ) ( , ( ( American ( Airlines ( Executive ( Vice ( President ( Gerard Arpey ) ) ) ) ) ) ( ( learned ( that ( communications ( had ( been ( lost ( with ( American 77 ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN At) (NP (CD 9:00))) (, ,) (NP (NNP American) (NNP Airlines) (NNP Executive) (NNP Vice) (NNP President) (NNP Gerard) (NNP Arpey)) (VP (VBD learned) (SBAR (IN that) (S (NP (NNS communications)) (VP (VBD had) (VP (VBN been) (VP (VBN lost) (PP (IN with) (NP (NNP American) (CD 77))))))))) (. .)))
It wasn't until 10:00 that Gerard Arpey leaned that communication had been lost with American 77.
( It ( ( ( ( was n't ) ( until 10:00 ) ) ( that ( ( Gerard Arpey ) ( leaned ( that ( communication ( had ( been ( lost ( with ( American 77 ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBD was) (RB n't) (PP (IN until) (NP (CD 10:00))) (SBAR (IN that) (S (NP (NNP Gerard) (NNP Arpey)) (VP (VBD leaned) (SBAR (IN that) (S (NP (NN communication)) (VP (VBD had) (VP (VBN been) (VP (VBN lost) (PP (IN with) (NP (NNP American) (CD 77)))))))))))) (. .)))