The tool can categorize and cluster {HEAD ~ content} by {TAIL ~ feature}, to assemble a library of scenes or scene clusters according to user selected criteria 
by
The tool can categorize and cluster { HEAD ~ content } by { TAIL ~ feature } , to assemble a library of scenes or scene clusters according to user selected criteria
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH