+--------COMP_by:V_PASS-N-------+-----------COMP_for:N-N-----------+     
            +-------SUBJ:V_PASS-N------+            +---MOD_ATT:N-ADJ--+-----COMP_for:N-N-----+           |     
      +MOD_A+-COMP_of:N-N+             |            |        +MOD_ATT:N+COMP_for:N-N+         |           |     
      |     |            |             |            |        |         |            |         |           |     
The start point of transcription is preceded by potential promoter sequences for GENEXXX , GENEXXX and GENEXXX .
SUBJ:V_PASS-N (preceded,point)
COMP_for:N-N (sequences,GENEXXX)
COMP_of:N-N (point,transcription)
COMP_by:V_PASS-N (preceded,sequences)
MOD_ATT:N-N (point,start)
COMP_for:N-N (sequences,GENEXXX)
COMP_for:N-N (sequences,GENEXXX)
MOD_ATT:N-N (sequences,promoter)
MOD_ATT:N-ADJ (sequences,potential)