The RCA occlusion was stented.
 patient has heart failure
(ROOT (S (NP (DT The) (NN RCA) (NN occlusion)) (VP (VBD was) (VP (VBN stented))) (. .)))
(ROOT (S (NP (NN patient)) (VP (VBZ has) (NP (NN heart) (NN failure)))))
( ( The ( RCA occlusion ) ) ( ( was stented ) . ) )
( patient ( has ( heart failure ) ) )