Denied headache, sinus tenderness, rhinorrhea or congestion.
 Patient has negative ROS
(ROOT (NP (NP (VBN Denied) (NN headache)) (, ,) (NP (NN sinus) (NN tenderness)) (, ,) (NP (NP (NN rhinorrhea)) (CC or) (NP (NN congestion))) (. .)))
(ROOT (S (NP (NN Patient)) (VP (VBZ has) (NP (JJ negative) (NN ROS)))))
( ( ( ( ( ( Denied headache ) , ) ( sinus tenderness ) ) , ) ( ( rhinorrhea or ) congestion ) ) . )
( Patient ( has ( negative ROS ) ) )