+----------------------------------COMP:N-N(of)---------------------------------+       
                                                                                                |                                     +--------------MOD_ATT:N-ADJ--------------+       
        +------MOD_ATT:N-ADJ-----+                                                              |                                     |      +-----------MOD_ATT:N-ADJ----------+       
        |        +-MOD_ATT:N-ADJ-+-----------------COMP:V_PASS-N(In)----------------+           |                                     |      |       +-------MOD_ATT:N-ADJ------+       
        |        |        +MOD_AT+       +---------------SUBJ:V_PASS-N--------------+COMP:V_PASS+                                     |      |       |                +MOD_ATT:N+       
        |        |        |      |       |                                          |           |                                     |      |       |                |         |       
 In embryonic __SP__ , mutant __SP__ __NODE__ gene ( heterozygous knockout ) is involved in apoptosis of fibroblasts that involves mutant __SP__ __NODE__ gene ( homozygous knockout ) .
MOD_ATT:N-ADJ (__SP__,embryonic)
MOD_ATT:N-ADJ (__SP__,__SP__)
MOD_ATT:N-ADJ (__SP__,mutant)
COMP:V_PASS-N(In) (involve,__SP__)
SUBJ:V_PASS-N (involve,__NODE__)
COMP:V_PASS-N(in) (involve,apoptosis)
COMP:N-N(of) (apoptosis,knockout)
MOD_ATT:N-ADJ (knockout,mutant)
MOD_ATT:N-ADJ (knockout,__SP__)
MOD_ATT:N-ADJ (knockout,__NODE__)
MOD_ATT:N-ADJ (knockout,homozygous)