(IP-OBJ 
  (NP-TMP 
    (NT １９９８年))
                    
  (NP-SBJ 
    (NN 警方))
                    
  (VP 
    (ADVP 
      (AD 还))
                    
    (VP 
      (VP 
        (VV 擒获)
                    
        (NP-OBJ 
          (NP 
            (NP-APP 
              (NN 北)
                    
              (NN 海岸)
                    
              (CC 和)
                    
              (NN 东部)
                    
              (NN 平原)
                    
              (ETC 等))
                    
            (NP 
              (NN 地)))
                    
          (NP 
            (NN 贩毒)
                    
            (NN 集团))
                    
          (NP 
            (NN 毒枭)))
                    
        (NP-EXT 
          (QP 
            (CD １２))
                    
          (NP 
            (NN 人)))))))
arg0: 
                    警方 
                
arg1: 
                    北 海岸 和 东部 平原 等 地 贩毒 集团 毒枭 
                
arg1: 
                    １２ 人 
                
argm: 
                    还 
                
argm: 
                    １９９８年