Chest x-ray showed mild congestive heart failure.
 The patient complains of cough
(ROOT (S (NP (NN Chest) (NN x-ray)) (VP (VBD showed) (NP (JJ mild) (JJ congestive) (NN heart) (NN failure))) (. .)))
(ROOT (S (NP (DT The) (NN patient)) (VP (VBZ complains) (PP (IN of) (NP (NN cough))))))
( ( Chest x-ray ) ( ( showed ( mild ( congestive ( heart failure ) ) ) ) . ) )
( ( The patient ) ( complains ( of cough ) ) )