
Are the following mentions coreferent?:
<m> purchase </m> in AMD acquires SeaMicro to grab share of microserver market AMD's $334 million deal with SeaMicro is a strong move to improve within the. 
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<m> purchase </m> in The pitched battle for supremacy in the chip-making market reached a critical phase yesterday with Advanced Micro Devices ( AMD ) in Sunnyvale, Calif. announcing its decision to acquire Canadian graphic cards manufacturer ATI Technologies ( ATI ). The imminent purchase of ATI is the most vital element in AMD's concerted campaign to dethrone the mighty Intel Corp. AMD agreed to buy Markham, Ont-based ATI for around $ 5.4 billion in cash and stock, the companies announced Monday. 