His infarct was felt to be small vessel.
 Patient has had a stroke
(ROOT (S (NP (PRP$ His) (NN infarct)) (VP (VBD was) (VP (VBN felt) (S (VP (TO to) (VP (VB be) (NP (JJ small) (NN vessel))))))) (. .)))
(ROOT (S (NP (NN Patient)) (VP (VBZ has) (VP (VBN had) (NP (DT a) (NN stroke))))))
( ( His infarct ) ( ( was ( felt ( to ( be ( small vessel ) ) ) ) ) . ) )
( Patient ( has ( had ( a stroke ) ) ) )