in the immediate aftermath of the terrorist attacks 
(ROOT (PP (IN in) (NP (NP (DT the) (JJ immediate) (NN aftermath)) (PP (IN of) (NP (DT the) (JJ terrorist) (NNS attacks))))))
(ROOT (PP (IN ) (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (DT ) (JJ ) (NNS ))))))