
Are the following mentions coreferent?:
<m> buys </m> in AMD buys SeaMicro, starts selling Intel - based servers In an unprecedented move that suggests that there might be life in the old dog yet, AMD has acquired SeaMicro, a company that builds high - density, low - power servers using Intel CPUs. The deal cost AMD $334 million. 
</s>
<m> buy </m> in RBC Capital Markets downgraded ATI Technologies to sector perform from outperform after Advanced Micro Devices announced its intention to buy the Canadian graphics chip-maker for $ 5.4 billion. 