
Are the following mentions coreferent?:
<m> announced </m> in T - Mobile has announced that it will be carrying the keyboard touting Q10, with pre - registration starting on April 29th. T - Mobile today announced that the BlackBerry Q10 will be added to its growing 4G LTE smartphone portfolio. T - Mobile today announced that the BlackBerry Q10 will be added to its growing 4G LTE smartphone portfolio. 
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<m> Confirms </m> in T - Mobile Confirms it will Carry BlackBerry Q10 T - Mobile has announced that it will be carrying the keyboard touting Q10, with pre - registration starting on April 29th. T - Mobile today announced that the BlackBerry Q10 will be added to its growing 4G LTE smartphone portfolio. 