{HEAD ~ The grouping} of {TAIL ~ documents} with the same fingerprint facilitates creation of anti spam rules or identification of web pages from particular websites, for example 
of
{ HEAD ~ The grouping } of { TAIL ~ documents } with the same fingerprint facilitates creation of anti spam rules or identification of web pages from particular websites , for example
HEAD 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 OTH OTH OTH OTH OTH OTH