+-------COMP:N-N(of)-------+     
     +MOD_ATT+--COMP:V_PASS-N(In)--+             |          +-MOD_ATT:N-ADJ-+     
     |   +MOD+         +MOD_PRED:N-+COMP:ADJ-N(fo+          |       +MOD_ATT+     
     |   |   |         |           |             |          |       |       |     
 In 3T3 L1 cells , __NODE__ is necessary for activity of __SP__ __NODE__ protein .
MOD_ATT:N-ADJ (cell,3T3)
MOD_ATT:N-N (cell,L1)
MOD_PRED:N-ADJ (__NODE__,necessary)
COMP:V_PASS-N(In) (necessary,cell)
COMP:ADJ-N(for) (necessary,activity)
COMP:N-N(of) (activity,protein)
MOD_ATT:N-ADJ (protein,__SP__)
MOD_ATT:N-ADJ (protein,__NODE__)