We have a bomb on board.
( We ( ( have ( ( a bomb ) ( on board ) ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VBP have) (NP (NP (DT a) (NN bomb)) (PP (IN on) (NP (NN board))))) (. .)))
There is a bomb on the plane that will go off in ten minutes.
( There ( ( is ( ( a bomb ) ( on ( ( the plane ) ( that ( will ( ( go off ) ( in ( ten minutes ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBZ is) (NP (NP (DT a) (NN bomb)) (PP (IN on) (NP (NP (DT the) (NN plane)) (SBAR (WHNP (WDT that)) (S (VP (MD will) (VP (VB go) (PRT (RP off)) (PP (IN in) (NP (CD ten) (NNS minutes))))))))))) (. .)))