+--------------SUBJ:V-N-------------+                         
      +----COMP:N-N(of)---+               +----COMP:V-N(in)----+    
      |           +MOD_ATT+          +-NEG+        +MOD_ATT:N-N+    
      |           |       |          |    |        |           |    
 Expression of __SP__ __NODE__ does not occur in ovary from __SP__ .
COMP:N-N(of) (expression,__NODE__)
MOD_ATT:N-ADJ (__NODE__,__SP__)
SUBJ:V-N (occur,expression)
NEG (occur,not)
COMP:V-N(in) (occur,__SP__)
MOD_ATT:N-N (__SP__,ovary)