PAST MEDICAL HISTORY:  Acute renal failure during last medical admission which is now resolved.
 the acute renal failure did not resolve
(ROOT (NP (NP (JJ PAST) (JJ MEDICAL) (NN HISTORY)) (: :) (NP (NP (JJ Acute) (JJ renal) (NN failure)) (PP (IN during) (NP (NP (JJ last) (JJ medical) (NN admission)) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (ADVP (RB now)) (VP (VBN resolved)))))))) (. .)))
(ROOT (S (NP (DT the) (JJ acute) (JJ renal) (NN failure)) (VP (VBD did) (RB not) (VP (VB resolve)))))
( ( ( ( PAST ( MEDICAL HISTORY ) ) : ) ( ( Acute ( renal failure ) ) ( during ( ( last ( medical admission ) ) ( which ( ( is now ) resolved ) ) ) ) ) ) . )
( ( the ( acute ( renal failure ) ) ) ( ( did not ) resolve ) )