+COMP:V_PASS-N(in)+               
    +MOD_ATT+--SUBJ:V_PASS-N-+          +MOD_AT+COMP:N-N(o+    
    |       |                |          |      |          |    
 __SP__ __NODE__ gene is involved in morbid obesity of __SP__ .
MOD_ATT:N-ADJ (__NODE__,__SP__)
SUBJ:V_PASS-N (involve,__NODE__)
COMP:V_PASS-N(in) (involve,obesity)
MOD_ATT:N-ADJ (obesity,morbid)
COMP:N-N(of) (obesity,__SP__)