
Are the following mentions coreferent?:
<m> announced </m> in Yesterday Advanced Micro Devices Inc. ( AMD ), a leading global CPU maker, announced its purchase of Canada-based graphics chips maker ATI Technologies Inc. in a US $ 5.4 billion deal that many said would help AMD compete more effectively with Intel Corp., its largest-in-the-world rival. 
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<m> announcing </m> in In a news conference announcing the merger held in Taipei yesterday, Henri Richard, executive vice president of AMD urged investors not to worry as ATI's relations with TSMC and its rival United Microelectronics Corp. would not change. 