+----------COMP:V_PASS-N(In)---------+                             
             |        +-MOD_ATT:N-ADJ-+           |                             
       +MOD_A+        |       +MOD_ATT+SUBJ:V_PASS+COMP:V_PASS+COMP:N-N(of+     
       |     |        |       |       |           |           |           |     
 In __SP__ blood , __SP__ __NODE__ protein is involved in quantity of __NODE__ .
MOD_ATT:N-ADJ (blood,__SP__)
MOD_ATT:N-ADJ (protein,__SP__)
MOD_ATT:N-ADJ (protein,__NODE__)
COMP:V_PASS-N(In) (involve,blood)
SUBJ:V_PASS-N (involve,protein)
COMP:V_PASS-N(in) (involve,quantity)
COMP:N-N(of) (quantity,__NODE__)