+------------SUBJ:V-N------------+------------COMP:V-N(in)-----------+    
      +-------COMP:N-N(of)-------+     |        +--------MOD_ATT:N-N-------+    
      |           +-MOD_ATT:N-ADJ+     |        |            +MOD_ATT:N-ADJ+    
      |           |       +MOD_AT+     |        |            |      +MOD_AT+    
      |           |       |      |     |        |            |      |      |    
 Expression of __SP__ __NODE__ mRNA occurs in ovary from pregnant adult __SP__ .
COMP:N-N(of) (expression,mRNA)
MOD_ATT:N-ADJ (mRNA,__SP__)
MOD_ATT:N-ADJ (mRNA,__NODE__)
SUBJ:V-N (occur,expression)
COMP:V-N(in) (occur,__SP__)
MOD_ATT:N-N (__SP__,ovary)
MOD_ATT:N-ADJ (__SP__,pregnant)
MOD_ATT:N-N (__SP__,adult)