Pulse returned at 7:05.
 Pulseless electrical activity at 7:05
(ROOT (S (NP (NN Pulse)) (VP (VBD returned) (PP (IN at) (NP (CD 7:05)))) (. .)))
(ROOT (NP (NP (JJ Pulseless) (JJ electrical) (NN activity)) (PP (IN at) (NP (CD 7:05)))))
( Pulse ( ( returned ( at 7:05 ) ) . ) )
( ( Pulseless ( electrical activity ) ) ( at 7:05 ) )