
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. 
</s>
<m> announced </m> in Apple unveils latest MacBook Pros, iOS 6 for iPhone and iPad June 11, 2012 at 12 : 36 PM ET After a witty intro by Siri herself, Apple CEO Tim Cook took the stage in San Francisco to welcome developers and announce new stuff. New MacBooks, global marketing VP Phil Schiller announced updates to the MacBook line. 