+--------------SUBJ:V-N-------------+                            
      +--------COMP:N-N(of)-------+       +-----COMP:V-N(in)-----+     
      |           +-MOD_ATT:N-ADJ-+       |        +-MOD_ATT:N-N-+     
      |           |       +MOD_ATT+       |        |     +MOD_ATT+     
      |           |       |       |       |        |     |       |     
 Expression of __SP__ __NODE__ protein occurs in term __SP__ placenta .
COMP:N-N(of) (expression,protein)
MOD_ATT:N-ADJ (protein,__SP__)
MOD_ATT:N-ADJ (protein,__NODE__)
SUBJ:V-N (occur,expression)
COMP:V-N(in) (occur,placenta)
MOD_ATT:N-N (placenta,term)
MOD_ATT:N-ADJ (placenta,__SP__)