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