+--------SUBJ:V_PASS-N-------+COMP_by:V_PASS-N+                    +----------APPOS----------+-----COMP_of:N-N----+------SUBJ:V_PASS-N------+------------COMP_in:V_PASS-N------------+      
      +----COMP_of:N-N---+         |         +MOD_AT+-SUBJ:V-N-+-OBJ:V-N-+--APPOS--+               |              +MOD_A+                +MOD:V_PA+COMP_at:V_+MOD_+             +MOD_ATT:N-+      
      |                  |         |         |      |          |         |         |               |              |     |                |        |          |    |             |          |      
Transcription of these genes is mediated by RNA polymerase containing GENEXXX ( GENEXXX ) , the product of the GENEXXX gene , which is itself expressed at stage III in the developing forespore .
COMP_in:V_PASS-N (expressed,forespore)
SUBJ:V_PASS-N (expressed,gene)
OBJ:V-N (containing,GENEXXX)
SUBJ:V-N (containing,polymerase)
COMP_by:V_PASS-N (mediated,polymerase)
APPOS (GENEXXX,product)
MOD:V_PASS-ADV (expressed,itself)
COMP_of:N-N (Transcription,genes)
COMP_of:N-N (product,gene)
SUBJ:V_PASS-N (mediated,Transcription)
MOD_ATT:N-N (gene,GENEXXX)
MOD_ATT:N-N (polymerase,RNA)
APPOS (GENEXXX,GENEXXX)
MOD_ATT:N-ADJ (forespore,developing)
COMP_at:V_PASS-N (expressed,stage)
MOD_POST:N-ADJ (stage,III)