+-------COMP:V-N(In)-------+          +-------COMP:N-N(of)-------+   
        |        +-----SUBJ:V-N----+          |           +-MOD_ATT:N-ADJ+   
        |        +COMP:N-N(+       +--OBJ:V-N-+           |       +MOD_AT+   
        |        |         |       |          |           |       |      |   
 In placenta , labor of __SP__ increases expression of __SP__ __NODE__ mRNA .
COMP:N-N(of) (labour,__SP__)
COMP:V-N(In) (increase,placenta)
SUBJ:V-N (increase,labour)
OBJ:V-N (increase,expression)
COMP:N-N(of) (expression,mRNA)
MOD_ATT:N-ADJ (mRNA,__SP__)
MOD_ATT:N-ADJ (mRNA,__NODE__)