+---------COMP:V-N(of)---------+                      
                                |      +-MOD_ATT:N-ADJ-+       +---COMP:V-N(in)--+    
                      +MOD_ATT:N+      |       +MOD_ATT+SUBJ:V-+          +MOD_AT+    
                      |         |      |       |       |       |          |      |    
 Expression of phosphorylated ( Y ) __SP__ __NODE__ protein occurs in __NODE__ cells .
MOD_ATT:N-ADJ (Y,phosphorylated)
MOD_ATT:N-ADJ (protein,__SP__)
MOD_ATT:N-ADJ (protein,__NODE__)
COMP:V-N(of) (occur,Y)
SUBJ:V-N (occur,protein)
COMP:V-N(in) (occur,cell)
MOD_ATT:N-ADJ (cell,__NODE__)