The scores are then aggregated to rate {TAIL ~ the event type} in {HEAD ~ addition} to scoring the individual event instances 
The scores are then aggregated to rate { TAIL ~ the event type } in { HEAD ~ addition } to scoring the individual event instances
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH