Head CT was negative for bleed.
 There is concern for stroke.
(ROOT (S (VP (VB Head) (SBAR (S (NP (NNP CT)) (VP (VBD was) (NP (JJ negative) (IN for) (VB bleed)))))) (. .)))
(ROOT (S (NP (EX There)) (VP (VBZ is) (NP (NP (NN concern)) (PP (IN for) (NP (NN stroke))))) (. .)))
( ( Head ( CT ( was ( ( negative for ) bleed ) ) ) ) . )
( There ( ( is ( concern ( for stroke ) ) ) . ) )