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