(CP 
  (WHNP-1 
    (-NONE- *OP*))
                    
  (CP 
    (IP 
      (NP-SBJ 
        (-NONE- *T*-1))
                    
      (VP 
        (PP-LOC 
          (P 在)
                    
          (NP 
            (NN 外面)))
                    
        (VP 
          (VV 系读)
                    
          (NP-EXT 
            (QP 
              (QP 
                (CD 三)
                    
                (CLP 
                  (M 个)))
                    
              (ADVP 
                (AD 多)))
                    
            (NP 
              (NN 星期))))))
                    
    (DEC 的)))
                    
(NP 
  (NN 老师)
                    
  (CC 和)
                    
  (NN 学生)))
arg0: 
                    *T*-1 -> 老师 和 学生          
                
argm: 
                    在 外面          
                
argm: 
                    三 个 多 星期