Complaining only of dyspnea and mild cough. .
 The patient complains of shortness of breath
(ROOT (S (S (VP (VBG Complaining) (PP (RB only) (IN of) (NP (NP (NN dyspnea)) (CC and) (NP (JJ mild) (NN cough))))) (. .)) (. .)))
(ROOT (S (NP (DT The) (NN patient)) (VP (VBZ complains) (PP (IN of) (NP (NP (NN shortness)) (PP (IN of) (NP (NN breath))))))))
( ( ( Complaining ( only ( of ( ( dyspnea and ) ( mild cough ) ) ) ) ) . ) . )
( ( The patient ) ( complains ( of ( shortness ( of breath ) ) ) ) )