(IP 
  (ADVP 
    (AD 於是))
                    
  (NP-SBJ 
    (NP-APP 
      (NN 夫妇))
                    
    (QP 
      (CD 两))
                    
    (NP 
      (NN 人)))
                    
  (VP 
    (VP 
      (VV 挖好)
                    
      (NP-OBJ 
        (NN 坑)))
                    
    (PU ，)
                    
    (VP 
      (ADVP 
        (AD 亲手))
                    
      (VP 
        (BA 将)
                    
        (IP-OBJ 
          (NP-SBJ 
            (NP 
              (PN 自己))
                    
            (DNP 
              (QP 
                (CD 三)
                    
                (CLP 
                  (M 岁)))
                    
              (DEG 的))
                    
            (NP 
              (NN 幼儿)))
                    
          (VP 
            (VV 活埋)))))))
arg0: 
                    夫妇 两 人 
                
arg1: 
                    坑 
                
argm: 
                    於是