They seem to have him on a primary radar.
( They ( ( seem ( to ( ( have him ) ( on ( a ( primary radar ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBP seem) (S (VP (TO to) (VP (VB have) (NP (PRP him)) (PP (IN on) (NP (DT a) (JJ primary) (NN radar))))))) (. .)))
They have got him on a primary radar.
( They ( ( have ( ( got him ) ( on ( a ( primary radar ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBP have) (VP (VBN got) (NP (PRP him)) (PP (IN on) (NP (DT a) (JJ primary) (NN radar))))) (. .)))