+-------COMP:N-N(of)-------+   
       +---COMP:V-N(In)---+          |           +-MOD_ATT:N-ADJ+   
       |         +SUBJ:V-N+--OBJ:V-N-+           |       +MOD_AT+   
       |         |        |          |           |       |      |   
 In __SP__ , __NODE__ decreases expression of __SP__ __NODE__ mRNA .
COMP:V-N(In) (decrease,__SP__)
SUBJ:V-N (decrease,__NODE__)
OBJ:V-N (decrease,expression)
COMP:N-N(of) (expression,mRNA)
MOD_ATT:N-ADJ (mRNA,__SP__)
MOD_ATT:N-ADJ (mRNA,__NODE__)