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