
Are the following mentions coreferent?:
<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. 
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<m> said </m> in Phil Schiller showcased the star attraction of the expo, the top-of-the-line 17-inch MacBook Pro that now features a design similar to Apple's two other laptops, the 13-inch MacBook and the 15-inch MacBook Pro. 