+----------------------COMP:V-N(In)---------------------+                             
       |                +---------------SUBJ:V-N---------------+                             
       |                +-----------APPOS-----------+          |                             
       |                |           +-MOD_ATT:N-ADJ-+          |                             
       |        +MOD_ATT+           |        +MOD_AT+          +--OBJ:V-N-+COMP:N-N(of)+     
       |        |       |           |        |      |          |          |            |     
 In __SP__ , mutant __NODE__ ( unspecified null mutation ) decreases expression of __NODE__ .
MOD_ATT:N-ADJ (__NODE__,mutant)
APPOS (__NODE__,mutation)
MOD_ATT:N-ADJ (mutation,unspecified)
MOD_ATT:N-ADJ (mutation,null)
COMP:V-N(In) (decrease,__SP__)
SUBJ:V-N (decrease,__NODE__)
OBJ:V-N (decrease,expression)
COMP:N-N(of) (expression,__NODE__)