  Live at Five. 
( ( Live ( at Five ) ) . )
(ROOT (S (VP (VB Live) (PP (IN at) (NP (CD Five)))) (. .)))
Something is happening at five
( Something ( is ( happening ( at five ) ) ) )
(ROOT (S (NP (NN Something)) (VP (VBZ is) (VP (VBG happening) (PP (IN at) (NP (CD five)))))))