They enabled the passengers to gain critical information, including the news that two aircraft had slammed into the World Trade Center.
( They ( ( ( ( enabled ( the ( passengers ( to ( gain ( critical information ) ) ) ) ) ) , ) ( including ( ( the news ) ( that ( ( two aircraft ) ( had ( slammed ( into ( the ( World ( Trade Center ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBD enabled) (NP (DT the) (NNS passengers) (S (VP (TO to) (VP (VB gain) (NP (JJ critical) (NN information)))))) (, ,) (PP (VBG including) (NP (NP (DT the) (NN news)) (SBAR (IN that) (S (NP (CD two) (NN aircraft)) (VP (VBD had) (VP (VBN slammed) (PP (IN into) (NP (DT the) (NNP World) (NNP Trade) (NNP Center)))))))))) (. .)))
The passengers remained ignorant of this critical information.
( ( The passengers ) ( ( remained ( ignorant ( of ( this ( critical information ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS passengers)) (VP (VBD remained) (NP (NP (NN ignorant)) (PP (IN of) (NP (DT this) (JJ critical) (NN information))))) (. .)))