Once the album has been created, {HEAD ~ the system} validates the album to determine if {TAIL ~ the user} has created any modeling errors 
Once the album has been created , { HEAD ~ the system } validates the album to determine if { TAIL ~ the user } has created any modeling errors
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH