
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> announce </m> in Apple has chosen WWDC week to announce an update to its MacBook Air line. 