monitoring {HEAD ~ the user actions} to identify {TAIL ~ patterns} of media content use from the user actions 
monitoring { HEAD ~ the user actions } to identify { TAIL ~ patterns } of media content use from the user actions
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH