Also, it should be understood that the links and contents of {HEAD ~ potential field web sites} are taken into consideration when performing {TAIL ~ a comparative analysis} with the target web site to identify field web sites to be used in the data analysis 
Also , it should be understood that the links and contents of { HEAD ~ potential field web sites } are taken into consideration when performing { TAIL ~ a comparative analysis } with the target web site to identify field web sites to be used in the data analysis
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