At 9:39, the FAA's Cleveland Air Route Traffic Control Center overheard a second announcement indicating that there was a bomb on board, that the plane was returning to the airport, and that they should remain seated.
( ( At 9:39 ) ( , ( ( ( the ( FAA 's ) ) ( Cleveland ( Air ( Route ( Traffic ( Control Center ) ) ) ) ) ) ( ( ( overheard ( a ( second announcement ) ) ) ( indicating ( that ( there ( ( ( was ( ( a bomb ) ( on board ) ) ) , ) ( ( ( ( that ( ( the plane ) ( was ( returning ( to ( the airport ) ) ) ) ) ) , ) and ) ( that ( they ( should ( remain seated ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN At) (NP (CD 9:39))) (, ,) (NP (NP (DT the) (NNP FAA) (POS 's)) (NNP Cleveland) (NNP Air) (NNP Route) (NNP Traffic) (NNP Control) (NNP Center)) (VP (VBD overheard) (NP (DT a) (JJ second) (NN announcement)) (S (VP (VBG indicating) (SBAR (IN that) (S (NP (EX there)) (VP (VBD was) (NP (NP (DT a) (NN bomb)) (PP (IN on) (NP (NN board)))) (, ,) (SBAR (SBAR (IN that) (S (NP (DT the) (NN plane)) (VP (VBD was) (VP (VBG returning) (PP (TO to) (NP (DT the) (NN airport))))))) (, ,) (CC and) (SBAR (IN that) (S (NP (PRP they)) (VP (MD should) (VP (VB remain) (VP (VBN seated))))))))))))) (. .)))
The FAA's Cleveland Air Route Traffic Control Center heard an announcement about a spider being let loose.
( ( ( The ( FAA 's ) ) ( Cleveland ( Air ( Route ( Traffic ( Control Center ) ) ) ) ) ) ( ( ( heard ( an announcement ) ) ( about ( ( a spider ) ( being ( let loose ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNP FAA) (POS 's)) (NNP Cleveland) (NNP Air) (NNP Route) (NNP Traffic) (NNP Control) (NNP Center)) (VP (VBD heard) (NP (DT an) (NN announcement)) (PP (IN about) (NP (NP (DT a) (NN spider)) (VP (VBG being) (VP (VBN let) (S (ADJP (RB loose)))))))) (. .)))