
Are the following mentions coreferent?:
<m> Macworld Expo 2009 </m> in The only hardware release at Macworld Expo 2009 was a predictable unibody upgrade for the 17-inch MacBook Pro, which Apple reports will have an eight-hour battery life. 
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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. 