+-----------COMP:V_PASS-N(In)----------+                                    
         |                 +----SUBJ:V_PASS-N---+            +----COMP:N-N(of)---+   
         |          +MOD_AT+COMP:N-N(+          +COMP:V_PASS-+            +MOD_AT+   
         |          |      |         |          |            |            |      |   
 In myometrium , preterm labor of __SP__ is involved in expression of __NODE__ mRNA .
MOD_ATT:N-ADJ (labour,preterm)
COMP:N-N(of) (labour,__SP__)
COMP:V_PASS-N(In) (involve,myometrium)
SUBJ:V_PASS-N (involve,labour)
COMP:V_PASS-N(in) (involve,expression)
COMP:N-N(of) (expression,mRNA)
MOD_ATT:N-ADJ (mRNA,__NODE__)