The plane is making strange moves.
( ( The plane ) ( ( is ( making ( strange moves ) ) ) . ) )
(ROOT (S (NP (DT The) (NN plane)) (VP (VBZ is) (VP (VBG making) (NP (JJ strange) (NNS moves)))) (. .)))
The plane is going to crash.
( ( The plane ) ( ( is ( going ( to crash ) ) ) . ) )
(ROOT (S (NP (DT The) (NN plane)) (VP (VBZ is) (VP (VBG going) (S (VP (TO to) (VP (VB crash)))))) (. .)))