
Are the following mentions coreferent?:
<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. 
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<m> announced </m> in Apple's big announcement at Macworld yesterday was not a new iMac, Mini or netbook, all of which had been rumoured, but a battery. The firm announced a widely expected refresh of its 17in MacBook Pro, with a battery that the firm said will offer eight hours of operation. 