
Are the following mentions coreferent?:
<m> replace </m> in Peter Capaldi has been announced as the new Doctor Who, the 12th actor to take up the coveted TV role. The 55 - year - old Scottish actor will replace Matt Smith, who announced in June that he was leaving the sci - fi show later this year. 
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<m> replacing </m> in Matt Smith, 26, will make his debut in 2010, replacing David Tennant, who leaves at the end of this year. He is the youngest actor to play the part. He has previously appeared on TV, in films and the theatre and is best known for appearing in the BBC's The Ruby in the Smoke. 