+-------------SUBJ:V-N-------------+              
          +-------COMP:N-N(of)-------+       |              
          +-COMP:N-N(of)+            |       +COMP:V-N(+    
          |             |            |       |         |    
 Co localization of __NODE__ and __NODE__ occurs in tissue .
COMP:N-N(of) (localization,__NODE__)
COMP:N-N(of) (localization,__NODE__)
SUBJ:V-N (occur,localization)
COMP:V-N(in) (occur,toilet)