
Are the following mentions coreferent?:
<m> announce </m> in T-Mobile has officially announce that they will launch the new RIM BlackBery Curve 8900 sometime in mid-February. Previously, the date of February 11 was leaked. 
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<m> announced </m> in T - Mobile has announced that it will carry the BlackBerry Q10, and business registration will begin at T - Mobile. com on April 29. 