Two minutes later the transponder was turned off and even primary radar contact with the aircraft was lost.
( ( Two ( minutes later ) ) ( ( ( ( ( ( the transponder ) ( was ( turned off ) ) ) and ) even ) ( ( ( primary ( radar contact ) ) ( with ( the aircraft ) ) ) ( was lost ) ) ) . ) )
(ROOT (S (NP (CD Two) (NNS minutes) (RB later)) (S (NP (DT the) (NN transponder)) (VP (VBD was) (VP (VBN turned) (PRT (RP off))))) (CC and) (ADVP (RB even)) (S (NP (NP (JJ primary) (NN radar) (NN contact)) (PP (IN with) (NP (DT the) (NN aircraft)))) (VP (VBD was) (VP (VBN lost)))) (. .)))
The transponder was turned off at the same time as the primary radar contact was lost.
( ( The transponder ) ( ( was ( ( ( turned off ) ( at ( the ( same time ) ) ) ) ( as ( ( the ( primary ( radar contact ) ) ) ( was lost ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN transponder)) (VP (VBD was) (VP (VBN turned) (PRT (RP off)) (PP (IN at) (NP (DT the) (JJ same) (NN time))) (SBAR (IN as) (S (NP (DT the) (JJ primary) (NN radar) (NN contact)) (VP (VBD was) (VP (VBN lost))))))) (. .)))