
Are the following mentions coreferent?:
<m> add </m> in T - Mobile USA continues to add to its growing 4G LTE smartphone portfolio with the BlackBerry Q10. 
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<m> Adds </m> in T - Mobile adds BlackBerry Q10 to its 4G LTE Smartphone Portfolio posted at 10 : 04 am on May 14, 2013 T - Mobile has announced that the BlackBerry Q10 is coming to their network. 