The Vice President authorized fighter aircraft to engage the inbound plane.
( ( The ( Vice President ) ) ( ( ( authorized ( fighter aircraft ) ) ( to ( engage ( the ( inbound plane ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Vice) (NNP President)) (VP (VBD authorized) (NP (NN fighter) (NN aircraft)) (S (VP (TO to) (VP (VB engage) (NP (DT the) (JJ inbound) (NN plane)))))) (. .)))
The plane was trying to avoid the fighters.
( ( The plane ) ( ( was ( trying ( to ( avoid ( the fighters ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN plane)) (VP (VBD was) (VP (VBG trying) (S (VP (TO to) (VP (VB avoid) (NP (DT the) (NNS fighters))))))) (. .)))