This provides, for example, the ability to analyze {HEAD ~ Web activity} by efficiently grouping and analyzing {TAIL ~ data} across several independent dimensions 
by efficiently grouping
This provides , for example , the ability to analyze { HEAD ~ Web activity } by efficiently grouping and analyzing { TAIL ~ data } across several independent dimensions
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH