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