+------------------------------SUBJ:V-N------------------------------+                     
 |                              +----------OBJ:V-N---------+          |                     
 +------------OBJ:V-N-----------+       +----MOD_ATT:N-N---+          +----OBJ:V-N----+     
 |           +MOD_ATT:N-A+SUBJ:V+       |        +MOD_ATT:N+MOD_P+    |       +MOD_ATT+     
 |           |           |      |       |        |         |     |    |       |       |     
 3 , didehydroretinoic acid increases trans activation activity of __SP__ __NODE__ protein .
MOD_ATT:N-ADJ (acid,didehydroretinoic)
OBJ:V-N (increase,3)
SUBJ:V-N (increase,acid)
OBJ:V-N (increase,activity)
MOD_ATT:N-N (activity,trans)
MOD_ATT:N-N (activity,activation)
MOD_POST:N-ADJ (activity,of)
SUBJ:V-N (__SP__,3)
OBJ:V-N (__SP__,protein)
MOD_ATT:N-ADJ (protein,__NODE__)