( -LRB- ( ( The ( air element ) ) ( ( ( might ( consist ( of ( ( one or ) ( several aircraft ) ) ) ) ) . ) -RRB- ) ) )
(ROOT (S (-LRB- -LRB-) (NP (DT The) (NN air) (NN element)) (VP (MD might) (VP (VB consist) (PP (IN of) (NP (NP (CD one)) (CC or) (NP (JJ several) (NN aircraft)))))) (. .) (-RRB- -RRB-)))
(The air element might consist of one or several aircraft.)
(ROOT (S (NP (NNP Air)) (VP (MD can) (VP (VB be) (VP (VBN separated) (PP (IN into) (NP (JJ several) (NNS elements)))))) (. .)))