(NP 
  (QP 
    (CD 一)
                    
    (CLP 
      (M 位)))
                    
  (CP 
    (WHNP-2 
      (-NONE- *OP*))
                    
    (CP 
      (IP 
        (NP-SBJ 
          (-NONE- *T*-2))
                    
        (VP 
          (NP-PN-LOC 
            (NR 岗山)
                    
            (NN 公园))
                    
          (VP 
            (VV 弹奏)
                    
            (NP-OBJ 
              (NN 三弦)))))
                    
      (DEC 的)))
                    
  (ADJP 
    (JJ 老))
                    
  (NP 
    (NN 人)))
arg0: 
                    *T*-2 
                
arg2: 
                    三弦 
                
argm: 
                    岗山 公园