+--------COMP_in:V-N--------+                              
       +---MOD_ATT:N-N--+----SUBJ:V-N----+-----------COMP_with:V-N-----------+                                        +----OBJ:V-N----+           +-------COMP_to:N-N------+     
       |        +MOD_ATT+--APPOS-+       +COMP_in:V-N+           +MOD_A+MOD_A+-COMP_of:N-N+--SUBJ:V_PASS-N--+COMP_to:V+       +MOD_ATT+           |              +MOD_ATT:N+     
       |        |       |        |       |           |           |     |     |            |                 |         |       |       |           |              |         |     
The GENEXXX structural gene , GENEXXX , lies in an operon with three other genes whose products have been shown to control GENEXXX activity in response to environmental stress .
COMP_in:V-N (lies,operon)
MOD_ATT:N-N (gene,GENEXXX)
COMP_with:V-N (lies,genes)
COMP_to:N-N (response,stress)
MOD_ATT:N-N (activity,GENEXXX)
MOD_ATT:N-ADJ (gene,structural)
APPOS (gene,GENEXXX)
COMP_to:V_PASS-V (shown,control)
COMP_in:V-N (control,response)
SUBJ:V_PASS-N (shown,products)
MOD_ATT:ADJ-ADJ (other,three)
SUBJ:V-N (lies,gene)
MOD_ATT:N-ADJ (stress,environmental)
OBJ:V-N (control,activity)
MOD_ATT:N-ADJ (genes,other)
COMP_of:N-N (products,genes)