
Are the following mentions coreferent?:
<m> Macworld </m> in Today may be Apple's last Macworld Expo appearance but Apple came bearing gifts. Apple's first hardware announcement at Macworld today introduced the 17 '' MacBook Pro. 
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<m> Macworld Expo </m> in For me the new, unibody MacBook Pro 17-inch ( PN MB604LL/A) is probably the most exciting thing announced here at Macworld Expo. 