
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> according to </m> in According to an online statement by the carrier, BlackBerry's new Q10 smartphone will be available for preorder for business customers on T - Mobile's website April 29. 