+----COMP:V-N(in)---+                  
      +------SUBJ:V-N------+        +MOD_ATT:N-+                  
      +COMP:N-N(of)+       |        |    +MOD_A+                  
      |            |       |        |    |     |                  
 Expression of __NODE__ occurs in beta islet cells from pancreas .
COMP:N-N(of) (expression,__NODE__)
SUBJ:V-N (occur,expression)
COMP:V-N(in) (occur,cell)
MOD_ATT:N-N (cell,beta)
MOD_ATT:N-N (cell,islet)