(IP 
  (NP-SBJ 
    (-NONE- *pro*))
                    
  (VP 
    (VV 可能)
                    
    (VP 
      (PP-LOC 
        (P 在)
                    
        (LCP 
          (NP 
            (NP-PN 
              (NR 木星))
                    
            (NP 
              (NN 大气层)))
                    
          (LC 中)))
                    
      (VP 
        (VV 产生)
                    
        (NP-OBJ 
          (NP 
            (QP 
              (CD 一)
                    
              (CLP 
                (M 个)))
                    
            (CP 
              (WHNP-2 
                (-NONE- *OP*))
                    
              (CP 
                (IP 
                  (NP-SBJ 
                    (-NONE- *T*-2))
                    
                  (VP 
                    (VA 巨大)))
                    
                (DEC 的)))
                    
            (NP 
              (NN 火球)))
                    
          (CC 和)
                    
          (NP 
            (CP 
              (WHNP-3 
                (-NONE- *OP*))
                    
              (CP 
                (IP 
                  (NP-SBJ 
                    (-NONE- *T*-3))
                    
                  (VP 
                    (VV 腾空而起)))
                    
                (DEC 的)))
                    
            (ADJP 
              (JJ 特大))
                    
            (NP 
              (NN 蘑菇云))))))))
arg0: 
                    *T*-3