+-MOD_PRED:N-ADJ+                                          
     +MOD_ATT+        +MOD:AD+-COMP:ADJ-N(for)+---COMP:N-N(of)--+       
     |       |        |      |                |                 |       
 __NODE__ protein is not necessary for differentiation of preadipocyte .
MOD_ATT:N-ADJ (protein,__NODE__)
MOD_PRED:N-ADJ (protein,necessary)
MOD:ADJ-ADV (necessary,not)
COMP:ADJ-N(for) (necessary,differentiation)
COMP:N-N(of) (differentiation,preadipocyte)