+------------------OBJ:V-N-----------------+       
                        +---------------------------------COMP:V-N(In)--------------------------------+              +--------MOD_ATT:N-N--------+       
       +--MOD_ATT:N-ADJ-+---OBJ:V-N---+                                                               |              |       +----MOD_ATT:N-N----+       
       |        +MOD_ATT+       +MOD_PRED:N-+COMP:ADJ-N(fo+MOD_P+   +MOD_A+----------SUBJ:V-N---------+              |       |         +MOD_ATT:N+       
       |        |       |       |     |     |             |     |   |     |                           |              |       |         |         |       
 In __SP__ , __SP__ __NODE__ protein is necessary for survival of tumor cells that involves mutant __SP__ Igf 1 [__NODE__] gene ( homozygous knockout ) .
MOD_ATT:N-ADJ (__NODE__,__SP__)
MOD_ATT:N-ADJ (__NODE__,__SP__)
MOD_PRED:N-ADJ (protein,necessary)
OBJ:V-N (be,__NODE__)
COMP:ADJ-N(for) (necessary,survival)
MOD_POST:N-ADJ (survival,of)
MOD_ATT:N-N (cell,tumour)
COMP:V-N(In) (__SP__,__NODE__)
SUBJ:V-N (__SP__,cell)
OBJ:V-N (__SP__,knockout)
MOD_ATT:N-N (knockout,[__NODE__])
MOD_ATT:N-N (knockout,gene)
MOD_ATT:N-ADJ (knockout,homozygous)