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 don't appear to have him on any kind of radar.
( They ( ( ( do n't ) ( appear ( to ( ( have him ) ( on ( ( any kind ) ( of radar ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBP do) (RB n't) (VP (VB appear) (S (VP (TO to) (VP (VB have) (NP (PRP him)) (PP (IN on) (NP (NP (DT any) (NN kind)) (PP (IN of) (NP (NN radar)))))))))) (. .)))