The approach can further form an overall rating of the media by aggregating the ratings of set of {HEAD ~ event types} within {TAIL ~ the media} 
within
The approach can further form an overall rating of the media by aggregating the ratings of set of { HEAD ~ event types } within { TAIL ~ the media }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL