(IP 
  (NP-SBJ 
    (NN 酗酒))
                    
  (VP 
    (ADVP 
      (AD 已))
                    
    (VP 
      (VV 成为)
                    
      (NP-OBJ 
        (NP 
          (CP 
            (WHNP-2 
              (-NONE- *OP*))
                    
            (CP 
              (IP 
                (NP-SBJ 
                  (-NONE- *T*-2))
                    
                (VP 
                  (VV 滋生)
                    
                  (NP-OBJ 
                    (NN 犯罪))))
                    
              (DEC 的)))
                    
          (NP 
            (ADJP 
              (JJ 主要))
                    
            (NP 
              (NN 根源))))
                    
        (NP 
          (NN 之一))))))
arg0: 
                    *T*-2 
                
arg1: 
                    犯罪