
Are the following mentions coreferent?:
<m> announcements </m> in While Apple's final keynote address at the annual MacWorld convention in San Francisco didn't contain the iPhone-related announcements many had hoped for, we were given all of the details on Apple's latest revamp to their largest and most powerful MacBook Pro. 
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<m> announce </m> in Apple unveils latest MacBook Pros, iOS 6 for iPhone and iPad June 11, 2012. After a witty intro by Siri herself, Apple CEO Tim Cook took the stage in San Francisco to welcome developers and announce new stuff. 