+-----------------SUBJ:V-N----------------+    
      +-----------COMP:N-N(of)----------+       |    
      |             +----MOD_ATT:N-N----+       |    
      |             |       +MOD_ATT:N-N+       |    
      |             |       |           |       |    
 Containment of response element in __NODE__ occurs .
COMP:N-N(of) (containment,__NODE__)
MOD_ATT:N-N (__NODE__,response)
MOD_ATT:N-N (__NODE__,element)
SUBJ:V-N (occur,containment)